diff --git a/docs/conf.py b/docs/conf.py
index f526fc8fc0915..b8c95fa6e06bd 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # superset documentation build configuration file, created by
 # sphinx-quickstart on Thu Dec 17 15:42:06 2015.
 #
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6870be6a74765..ee3c3ffe088a7 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,4 @@
 console_log==0.2.10
-flake8-coding==1.3.0
 flake8-commas==2.0.0
 flake8-import-order==0.18
 flake8-quotes==1.0.0
diff --git a/scripts/permissions_cleanup.py b/scripts/permissions_cleanup.py
index cca3e93bc4b2d..8d57a0132765a 100644
--- a/scripts/permissions_cleanup.py
+++ b/scripts/permissions_cleanup.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from collections import defaultdict
 
 from superset import sm
diff --git a/setup.py b/setup.py
index f92c851391504..76f31f6f4cb14 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import io
 import json
 import os
diff --git a/superset/__init__.py b/superset/__init__.py
index cd3ce0072af9d..7a1213c80fe48 100644
--- a/superset/__init__.py
+++ b/superset/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Package's main module!"""
 import json
diff --git a/superset/bin/superset b/superset/bin/superset
index e0fef810cc133..70968c69648b7 100755
--- a/superset/bin/superset
+++ b/superset/bin/superset
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 import warnings
 import click
 from flask.cli import FlaskGroup
diff --git a/superset/cache_util.py b/superset/cache_util.py
index 0c0c140849ea6..12bed2b18070f 100644
--- a/superset/cache_util.py
+++ b/superset/cache_util.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from flask import request
 
diff --git a/superset/cli.py b/superset/cli.py
index 3322a8a1c4fa4..a177301926040 100755
--- a/superset/cli.py
+++ b/superset/cli.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime
 import logging
diff --git a/superset/config.py b/superset/config.py
index 9f04e225fe9e2..c94373969f52e 100644
--- a/superset/config.py
+++ b/superset/config.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """The main config file for Superset
 
diff --git a/superset/connectors/base/models.py b/superset/connectors/base/models.py
index 6d30fc99b33b2..c51e078a5ceff 100644
--- a/superset/connectors/base/models.py
+++ b/superset/connectors/base/models.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import json
 
diff --git a/superset/connectors/base/views.py b/superset/connectors/base/views.py
index f34a1ca1a8f05..a77177ee33fd4 100644
--- a/superset/connectors/base/views.py
+++ b/superset/connectors/base/views.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from flask import Markup
 
diff --git a/superset/connectors/connector_registry.py b/superset/connectors/connector_registry.py
index 2d7a0e2304522..258d2f5a6e2fd 100644
--- a/superset/connectors/connector_registry.py
+++ b/superset/connectors/connector_registry.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from sqlalchemy.orm import subqueryload
 
diff --git a/superset/connectors/druid/__init__.py b/superset/connectors/druid/__init__.py
index a60249b87bb83..b2df79851f224 100644
--- a/superset/connectors/druid/__init__.py
+++ b/superset/connectors/druid/__init__.py
@@ -1,3 +1,2 @@
-# -*- coding: utf-8 -*-
 from . import models  # noqa
 from . import views  # noqa
diff --git a/superset/connectors/druid/models.py b/superset/connectors/druid/models.py
index 77f96310eebdf..eebfad09b85de 100644
--- a/superset/connectors/druid/models.py
+++ b/superset/connectors/druid/models.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 # pylint: disable=invalid-unary-operand-type
 from collections import OrderedDict
diff --git a/superset/connectors/druid/views.py b/superset/connectors/druid/views.py
index 546561e9c0b15..f660882b310ed 100644
--- a/superset/connectors/druid/views.py
+++ b/superset/connectors/druid/views.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime
 import json
diff --git a/superset/connectors/sqla/__init__.py b/superset/connectors/sqla/__init__.py
index a60249b87bb83..b2df79851f224 100644
--- a/superset/connectors/sqla/__init__.py
+++ b/superset/connectors/sqla/__init__.py
@@ -1,3 +1,2 @@
-# -*- coding: utf-8 -*-
 from . import models  # noqa
 from . import views  # noqa
diff --git a/superset/connectors/sqla/models.py b/superset/connectors/sqla/models.py
index f3417ae8ed9dc..7dce50d27f8c5 100644
--- a/superset/connectors/sqla/models.py
+++ b/superset/connectors/sqla/models.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime
 import logging
diff --git a/superset/connectors/sqla/views.py b/superset/connectors/sqla/views.py
index b00d6586aa519..feaee3683d688 100644
--- a/superset/connectors/sqla/views.py
+++ b/superset/connectors/sqla/views.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Views used by the SqlAlchemy connector"""
 from flask import flash, Markup, redirect
diff --git a/superset/dashboard_import_export_util.py b/superset/dashboard_import_export_util.py
index 0a8fd25c2b2e3..0b474b09f6a25 100644
--- a/superset/dashboard_import_export_util.py
+++ b/superset/dashboard_import_export_util.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from __future__ import absolute_import
 from __future__ import division
diff --git a/superset/dataframe.py b/superset/dataframe.py
index c58df334b7c1d..e3e75cd3e8d1b 100644
--- a/superset/dataframe.py
+++ b/superset/dataframe.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """ Superset wrapper around pandas.DataFrame.
 
diff --git a/superset/db_engine_specs.py b/superset/db_engine_specs.py
index c81cbfae5b130..172cf9cc86831 100644
--- a/superset/db_engine_specs.py
+++ b/superset/db_engine_specs.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Compatibility layer for different database engines
 
diff --git a/superset/db_engines/hive.py b/superset/db_engines/hive.py
index 95acf4fa8a8cc..31c658e9daeec 100644
--- a/superset/db_engines/hive.py
+++ b/superset/db_engines/hive.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from pyhive import hive
 from TCLIService import ttypes
diff --git a/superset/dict_import_export_util.py b/superset/dict_import_export_util.py
index 696c3c831fb99..1334120999549 100644
--- a/superset/dict_import_export_util.py
+++ b/superset/dict_import_export_util.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import logging
 
diff --git a/superset/exceptions.py b/superset/exceptions.py
index 08aff8f5a4e35..51d0e4803c86e 100644
--- a/superset/exceptions.py
+++ b/superset/exceptions.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 
 
diff --git a/superset/extract_table_names.py b/superset/extract_table_names.py
index fcb4fc2f480ce..a8c5ecde58f46 100644
--- a/superset/extract_table_names.py
+++ b/superset/extract_table_names.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 #
 # Copyright (C) 2016 Andi Albrecht, albrecht.andi@gmail.com
diff --git a/superset/forms.py b/superset/forms.py
index 06b304e61a5ed..e4b8481eda90c 100644
--- a/superset/forms.py
+++ b/superset/forms.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Contains the logic to create cohesive forms on the explore view"""
 from flask_appbuilder.fieldwidgets import BS3TextFieldWidget
diff --git a/superset/import_util.py b/superset/import_util.py
index 16acb0d1a8efa..9fb77ef496a66 100644
--- a/superset/import_util.py
+++ b/superset/import_util.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import logging
 
diff --git a/superset/jinja_context.py b/superset/jinja_context.py
index 3bf68ce61138b..0af69689014e6 100644
--- a/superset/jinja_context.py
+++ b/superset/jinja_context.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Defines the templating context for SQL Lab"""
 from datetime import datetime, timedelta
diff --git a/superset/legacy.py b/superset/legacy.py
index 00810106242f0..35fad36f6ab5c 100644
--- a/superset/legacy.py
+++ b/superset/legacy.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Code related with dealing with legacy / change management"""
 import re
diff --git a/superset/migrations/env.py b/superset/migrations/env.py
index 55ee177063fc6..94269f5c0e5fc 100755
--- a/superset/migrations/env.py
+++ b/superset/migrations/env.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import logging
 from logging.config import fileConfig
diff --git a/superset/migrations/versions/1226819ee0e3_fix_wrong_constraint_on_table_columns.py b/superset/migrations/versions/1226819ee0e3_fix_wrong_constraint_on_table_columns.py
index 1aa2018e83806..787408666391e 100644
--- a/superset/migrations/versions/1226819ee0e3_fix_wrong_constraint_on_table_columns.py
+++ b/superset/migrations/versions/1226819ee0e3_fix_wrong_constraint_on_table_columns.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Fix wrong constraint on table columns
 
 Revision ID: 1226819ee0e3
diff --git a/superset/migrations/versions/1296d28ec131_druid_exports.py b/superset/migrations/versions/1296d28ec131_druid_exports.py
index 0b97806f75197..6df37bcda5931 100644
--- a/superset/migrations/versions/1296d28ec131_druid_exports.py
+++ b/superset/migrations/versions/1296d28ec131_druid_exports.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Adds params to the datasource (druid) table
 
 Revision ID: 1296d28ec131
diff --git a/superset/migrations/versions/12d55656cbca_is_featured.py b/superset/migrations/versions/12d55656cbca_is_featured.py
index 66f6ef2154588..3158223743064 100644
--- a/superset/migrations/versions/12d55656cbca_is_featured.py
+++ b/superset/migrations/versions/12d55656cbca_is_featured.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """is_featured
 
 Revision ID: 12d55656cbca
diff --git a/superset/migrations/versions/18e88e1cc004_making_audit_nullable.py b/superset/migrations/versions/18e88e1cc004_making_audit_nullable.py
index 5dae55b3a8087..213f6036b5fe8 100644
--- a/superset/migrations/versions/18e88e1cc004_making_audit_nullable.py
+++ b/superset/migrations/versions/18e88e1cc004_making_audit_nullable.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """making audit nullable
 
 Revision ID: 18e88e1cc004
diff --git a/superset/migrations/versions/19a814813610_adding_metric_warning_text.py b/superset/migrations/versions/19a814813610_adding_metric_warning_text.py
index ab0165e87730e..cf39a0e631599 100644
--- a/superset/migrations/versions/19a814813610_adding_metric_warning_text.py
+++ b/superset/migrations/versions/19a814813610_adding_metric_warning_text.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Adding metric warning_text
 
 Revision ID: 19a814813610
diff --git a/superset/migrations/versions/1a48a5411020_adding_slug_to_dash.py b/superset/migrations/versions/1a48a5411020_adding_slug_to_dash.py
index b5efe73432998..c6b88642b254b 100644
--- a/superset/migrations/versions/1a48a5411020_adding_slug_to_dash.py
+++ b/superset/migrations/versions/1a48a5411020_adding_slug_to_dash.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """adding slug to dash
 
 Revision ID: 1a48a5411020
diff --git a/superset/migrations/versions/1d2ddd543133_log_dt.py b/superset/migrations/versions/1d2ddd543133_log_dt.py
index 9c46ef96817a0..ba45d1dc8820b 100644
--- a/superset/migrations/versions/1d2ddd543133_log_dt.py
+++ b/superset/migrations/versions/1d2ddd543133_log_dt.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """log dt
 
 Revision ID: 1d2ddd543133
diff --git a/superset/migrations/versions/1e2841a4128_.py b/superset/migrations/versions/1e2841a4128_.py
index 459a555086734..330b3b217c010 100644
--- a/superset/migrations/versions/1e2841a4128_.py
+++ b/superset/migrations/versions/1e2841a4128_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 1e2841a4128
diff --git a/superset/migrations/versions/21e88bc06c02_annotation_migration.py b/superset/migrations/versions/21e88bc06c02_annotation_migration.py
index 9a0e407eb0476..4c7bb807aff04 100644
--- a/superset/migrations/versions/21e88bc06c02_annotation_migration.py
+++ b/superset/migrations/versions/21e88bc06c02_annotation_migration.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import json
 
 from alembic import op
diff --git a/superset/migrations/versions/2591d77e9831_user_id.py b/superset/migrations/versions/2591d77e9831_user_id.py
index 2e3b7d1b30803..4fac61ce9eb31 100644
--- a/superset/migrations/versions/2591d77e9831_user_id.py
+++ b/superset/migrations/versions/2591d77e9831_user_id.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """user_id
 
 Revision ID: 2591d77e9831
diff --git a/superset/migrations/versions/27ae655e4247_make_creator_owners.py b/superset/migrations/versions/27ae655e4247_make_creator_owners.py
index 92b455b86b564..2c3cdc1ed289c 100644
--- a/superset/migrations/versions/27ae655e4247_make_creator_owners.py
+++ b/superset/migrations/versions/27ae655e4247_make_creator_owners.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Make creator owners
 
 Revision ID: 27ae655e4247
diff --git a/superset/migrations/versions/289ce07647b_add_encrypted_password_field.py b/superset/migrations/versions/289ce07647b_add_encrypted_password_field.py
index 56fa53aed0cb4..2328d6d49282a 100644
--- a/superset/migrations/versions/289ce07647b_add_encrypted_password_field.py
+++ b/superset/migrations/versions/289ce07647b_add_encrypted_password_field.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add encrypted password field
 
 Revision ID: 289ce07647b
diff --git a/superset/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py b/superset/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py
index 19845604e397c..85b54bc5cc31c 100644
--- a/superset/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py
+++ b/superset/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """TZ offsets in data sources
 
 Revision ID: 2929af7925ed
diff --git a/superset/migrations/versions/2fcdcb35e487_saved_queries.py b/superset/migrations/versions/2fcdcb35e487_saved_queries.py
index 6db0e6f553ab1..da1c975d23166 100644
--- a/superset/migrations/versions/2fcdcb35e487_saved_queries.py
+++ b/superset/migrations/versions/2fcdcb35e487_saved_queries.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """saved_queries
 
 Revision ID: 2fcdcb35e487
diff --git a/superset/migrations/versions/315b3f4da9b0_adding_log_model.py b/superset/migrations/versions/315b3f4da9b0_adding_log_model.py
index ddceff571f513..d9fdfaccea1b3 100644
--- a/superset/migrations/versions/315b3f4da9b0_adding_log_model.py
+++ b/superset/migrations/versions/315b3f4da9b0_adding_log_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """adding log model
 
 Revision ID: 315b3f4da9b0
diff --git a/superset/migrations/versions/33d996bcc382_update_slice_model.py b/superset/migrations/versions/33d996bcc382_update_slice_model.py
index 28ef8310a3fe7..a92a959c5c151 100644
--- a/superset/migrations/versions/33d996bcc382_update_slice_model.py
+++ b/superset/migrations/versions/33d996bcc382_update_slice_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from alembic import op
 import sqlalchemy as sa
 from superset import db
diff --git a/superset/migrations/versions/3b626e2a6783_sync_db_with_models.py b/superset/migrations/versions/3b626e2a6783_sync_db_with_models.py
index 8e21114e3830d..03edfe5275faa 100644
--- a/superset/migrations/versions/3b626e2a6783_sync_db_with_models.py
+++ b/superset/migrations/versions/3b626e2a6783_sync_db_with_models.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Sync DB with the models.py.
 
 Sqlite doesn't support alter on tables, that's why most of the operations
diff --git a/superset/migrations/versions/3c3ffe173e4f_add_sql_string_to_table.py b/superset/migrations/versions/3c3ffe173e4f_add_sql_string_to_table.py
index d73bdc0be486f..5b64bc40df2f0 100644
--- a/superset/migrations/versions/3c3ffe173e4f_add_sql_string_to_table.py
+++ b/superset/migrations/versions/3c3ffe173e4f_add_sql_string_to_table.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add_sql_string_to_table
 
 Revision ID: 3c3ffe173e4f
diff --git a/superset/migrations/versions/41f6a59a61f2_database_options_for_sql_lab.py b/superset/migrations/versions/41f6a59a61f2_database_options_for_sql_lab.py
index 484d0935dd421..18a54416e67c5 100644
--- a/superset/migrations/versions/41f6a59a61f2_database_options_for_sql_lab.py
+++ b/superset/migrations/versions/41f6a59a61f2_database_options_for_sql_lab.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """database options for sql lab
 
 Revision ID: 41f6a59a61f2
diff --git a/superset/migrations/versions/430039611635_log_more.py b/superset/migrations/versions/430039611635_log_more.py
index ac84aeb195b0b..b2534586115cf 100644
--- a/superset/migrations/versions/430039611635_log_more.py
+++ b/superset/migrations/versions/430039611635_log_more.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """log more
 
 Revision ID: 430039611635
diff --git a/superset/migrations/versions/43df8de3a5f4_dash_json.py b/superset/migrations/versions/43df8de3a5f4_dash_json.py
index 9dcc7b2ff67d0..c56ddc8f5fb26 100644
--- a/superset/migrations/versions/43df8de3a5f4_dash_json.py
+++ b/superset/migrations/versions/43df8de3a5f4_dash_json.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 43df8de3a5f4
diff --git a/superset/migrations/versions/4500485bde7d_allow_run_sync_async.py b/superset/migrations/versions/4500485bde7d_allow_run_sync_async.py
index deee3c019660f..0695e2cda59b6 100644
--- a/superset/migrations/versions/4500485bde7d_allow_run_sync_async.py
+++ b/superset/migrations/versions/4500485bde7d_allow_run_sync_async.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """allow_run_sync_async
 
 Revision ID: 4500485bde7d
diff --git a/superset/migrations/versions/472d2f73dfd4_.py b/superset/migrations/versions/472d2f73dfd4_.py
index d5a1c039208c8..d74fd03a7b7c1 100644
--- a/superset/migrations/versions/472d2f73dfd4_.py
+++ b/superset/migrations/versions/472d2f73dfd4_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 472d2f73dfd4
diff --git a/superset/migrations/versions/4736ec66ce19_.py b/superset/migrations/versions/4736ec66ce19_.py
index 4cb79595fb32b..36f1ed4c95c59 100644
--- a/superset/migrations/versions/4736ec66ce19_.py
+++ b/superset/migrations/versions/4736ec66ce19_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 4736ec66ce19
diff --git a/superset/migrations/versions/4e6a06bad7a8_init.py b/superset/migrations/versions/4e6a06bad7a8_init.py
index 7c06134c09aea..add55f86714a9 100644
--- a/superset/migrations/versions/4e6a06bad7a8_init.py
+++ b/superset/migrations/versions/4e6a06bad7a8_init.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Init
 
 Revision ID: 4e6a06bad7a8
diff --git a/superset/migrations/versions/4fa88fe24e94_owners_many_to_many.py b/superset/migrations/versions/4fa88fe24e94_owners_many_to_many.py
index edcb6db5ea3a6..f0ec92bc93b2b 100644
--- a/superset/migrations/versions/4fa88fe24e94_owners_many_to_many.py
+++ b/superset/migrations/versions/4fa88fe24e94_owners_many_to_many.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """owners_many_to_many
 
 Revision ID: 4fa88fe24e94
diff --git a/superset/migrations/versions/525c854f0005_log_this_plus.py b/superset/migrations/versions/525c854f0005_log_this_plus.py
index 1db3f5c76006a..9eaebef2a9900 100644
--- a/superset/migrations/versions/525c854f0005_log_this_plus.py
+++ b/superset/migrations/versions/525c854f0005_log_this_plus.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """log_this_plus
 
 Revision ID: 525c854f0005
diff --git a/superset/migrations/versions/55179c7f25c7_sqla_descr.py b/superset/migrations/versions/55179c7f25c7_sqla_descr.py
index 814da0b184f0e..aade0b930aa0c 100644
--- a/superset/migrations/versions/55179c7f25c7_sqla_descr.py
+++ b/superset/migrations/versions/55179c7f25c7_sqla_descr.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """sqla_descr
 
 Revision ID: 55179c7f25c7
diff --git a/superset/migrations/versions/5a7bad26f2a7_.py b/superset/migrations/versions/5a7bad26f2a7_.py
index d70a5ab7eb1b8..66dc20aae35e2 100644
--- a/superset/migrations/versions/5a7bad26f2a7_.py
+++ b/superset/migrations/versions/5a7bad26f2a7_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 5a7bad26f2a7
diff --git a/superset/migrations/versions/5e4a03ef0bf0_add_request_access_model.py b/superset/migrations/versions/5e4a03ef0bf0_add_request_access_model.py
index b580e239cca0f..ad6375f1837c4 100644
--- a/superset/migrations/versions/5e4a03ef0bf0_add_request_access_model.py
+++ b/superset/migrations/versions/5e4a03ef0bf0_add_request_access_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add access_request table to manage requests to access datastores.
 
 Revision ID: 5e4a03ef0bf0
diff --git a/superset/migrations/versions/6414e83d82b7_.py b/superset/migrations/versions/6414e83d82b7_.py
index 869b6a25883a0..c1f822802929c 100644
--- a/superset/migrations/versions/6414e83d82b7_.py
+++ b/superset/migrations/versions/6414e83d82b7_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 6414e83d82b7
diff --git a/superset/migrations/versions/65903709c321_allow_dml.py b/superset/migrations/versions/65903709c321_allow_dml.py
index cf5f50a6fb853..9860c503a9ba3 100644
--- a/superset/migrations/versions/65903709c321_allow_dml.py
+++ b/superset/migrations/versions/65903709c321_allow_dml.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """allow_dml
 
 Revision ID: 65903709c321
diff --git a/superset/migrations/versions/67a6ac9b727b_update_spatial_params.py b/superset/migrations/versions/67a6ac9b727b_update_spatial_params.py
index e322c5eea52c1..b3e81d6e96443 100644
--- a/superset/migrations/versions/67a6ac9b727b_update_spatial_params.py
+++ b/superset/migrations/versions/67a6ac9b727b_update_spatial_params.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """update_spatial_params
 
 Revision ID: 67a6ac9b727b
diff --git a/superset/migrations/versions/732f1c06bcbf_add_fetch_values_predicate.py b/superset/migrations/versions/732f1c06bcbf_add_fetch_values_predicate.py
index 7ad56c7f23b6e..2d7ce54107a83 100644
--- a/superset/migrations/versions/732f1c06bcbf_add_fetch_values_predicate.py
+++ b/superset/migrations/versions/732f1c06bcbf_add_fetch_values_predicate.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add fetch values predicate
 
 Revision ID: 732f1c06bcbf
diff --git a/superset/migrations/versions/763d4b211ec9_fixing_audit_fk.py b/superset/migrations/versions/763d4b211ec9_fixing_audit_fk.py
index f25b3bab36444..d8feb778216fe 100644
--- a/superset/migrations/versions/763d4b211ec9_fixing_audit_fk.py
+++ b/superset/migrations/versions/763d4b211ec9_fixing_audit_fk.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """fixing audit fk
 
 Revision ID: 763d4b211ec9
diff --git a/superset/migrations/versions/7dbf98566af7_slice_description.py b/superset/migrations/versions/7dbf98566af7_slice_description.py
index 58e295d426045..329af9ef2d78d 100644
--- a/superset/migrations/versions/7dbf98566af7_slice_description.py
+++ b/superset/migrations/versions/7dbf98566af7_slice_description.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 7dbf98566af7
diff --git a/superset/migrations/versions/7e3ddad2a00b_results_key_to_query.py b/superset/migrations/versions/7e3ddad2a00b_results_key_to_query.py
index b2ae3dabd962e..f2a46085631da 100644
--- a/superset/migrations/versions/7e3ddad2a00b_results_key_to_query.py
+++ b/superset/migrations/versions/7e3ddad2a00b_results_key_to_query.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """results_key to query
 
 Revision ID: 7e3ddad2a00b
diff --git a/superset/migrations/versions/836c0bf75904_cache_timeouts.py b/superset/migrations/versions/836c0bf75904_cache_timeouts.py
index 14f4f1bab73b1..86480c2ecdbf8 100644
--- a/superset/migrations/versions/836c0bf75904_cache_timeouts.py
+++ b/superset/migrations/versions/836c0bf75904_cache_timeouts.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """cache_timeouts
 
 Revision ID: 836c0bf75904
diff --git a/superset/migrations/versions/867bf4f117f9_adding_extra_field_to_database_model.py b/superset/migrations/versions/867bf4f117f9_adding_extra_field_to_database_model.py
index af18e05a03063..aa95c97b7c92f 100644
--- a/superset/migrations/versions/867bf4f117f9_adding_extra_field_to_database_model.py
+++ b/superset/migrations/versions/867bf4f117f9_adding_extra_field_to_database_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Adding extra field to Database model
 
 Revision ID: 867bf4f117f9
diff --git a/superset/migrations/versions/8e80a26a31db_.py b/superset/migrations/versions/8e80a26a31db_.py
index c9e45dc600101..73a0b0610ecb0 100644
--- a/superset/migrations/versions/8e80a26a31db_.py
+++ b/superset/migrations/versions/8e80a26a31db_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 8e80a26a31db
diff --git a/superset/migrations/versions/956a063c52b3_adjusting_key_length.py b/superset/migrations/versions/956a063c52b3_adjusting_key_length.py
index c8ff99755f562..e5351de19ded8 100644
--- a/superset/migrations/versions/956a063c52b3_adjusting_key_length.py
+++ b/superset/migrations/versions/956a063c52b3_adjusting_key_length.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """adjusting key length
 
 Revision ID: 956a063c52b3
diff --git a/superset/migrations/versions/960c69cb1f5b_.py b/superset/migrations/versions/960c69cb1f5b_.py
index a7ac3dfdef1d6..62ee976577d11 100644
--- a/superset/migrations/versions/960c69cb1f5b_.py
+++ b/superset/migrations/versions/960c69cb1f5b_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add dttm_format related fields in table_columns
 
 Revision ID: 960c69cb1f5b
diff --git a/superset/migrations/versions/979c03af3341_.py b/superset/migrations/versions/979c03af3341_.py
index 48c37277e1095..6cb241f388d01 100644
--- a/superset/migrations/versions/979c03af3341_.py
+++ b/superset/migrations/versions/979c03af3341_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: 979c03af3341
diff --git a/superset/migrations/versions/a2d606a761d9_adding_favstar_model.py b/superset/migrations/versions/a2d606a761d9_adding_favstar_model.py
index 5de6fe09cb31e..16087cb82cf2e 100644
--- a/superset/migrations/versions/a2d606a761d9_adding_favstar_model.py
+++ b/superset/migrations/versions/a2d606a761d9_adding_favstar_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """adding favstar model
 
 Revision ID: a2d606a761d9
diff --git a/superset/migrations/versions/a65458420354_add_result_backend_time_logging.py b/superset/migrations/versions/a65458420354_add_result_backend_time_logging.py
index 5eddea19489ce..49a9d1b74e812 100644
--- a/superset/migrations/versions/a65458420354_add_result_backend_time_logging.py
+++ b/superset/migrations/versions/a65458420354_add_result_backend_time_logging.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add_result_backend_time_logging
 
 Revision ID: a65458420354
diff --git a/superset/migrations/versions/a6c18f869a4e_query_start_running_time.py b/superset/migrations/versions/a6c18f869a4e_query_start_running_time.py
index c1d6b950d4e92..12f5f840ad886 100644
--- a/superset/migrations/versions/a6c18f869a4e_query_start_running_time.py
+++ b/superset/migrations/versions/a6c18f869a4e_query_start_running_time.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """query.start_running_time
 
 Revision ID: a6c18f869a4e
diff --git a/superset/migrations/versions/a99f2f7c195a_rewriting_url_from_shortner_with_new_.py b/superset/migrations/versions/a99f2f7c195a_rewriting_url_from_shortner_with_new_.py
index 0ef58981c372c..818d08d830088 100644
--- a/superset/migrations/versions/a99f2f7c195a_rewriting_url_from_shortner_with_new_.py
+++ b/superset/migrations/versions/a99f2f7c195a_rewriting_url_from_shortner_with_new_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """rewriting url from shortner with new format
 
 Revision ID: a99f2f7c195a
diff --git a/superset/migrations/versions/a9c47e2c1547_add_impersonate_user_to_dbs.py b/superset/migrations/versions/a9c47e2c1547_add_impersonate_user_to_dbs.py
index 1281976e3a0cf..a0561909227a2 100644
--- a/superset/migrations/versions/a9c47e2c1547_add_impersonate_user_to_dbs.py
+++ b/superset/migrations/versions/a9c47e2c1547_add_impersonate_user_to_dbs.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add impersonate_user to dbs
 
 Revision ID: a9c47e2c1547
diff --git a/superset/migrations/versions/ab3d66c4246e_add_cache_timeout_to_druid_cluster.py b/superset/migrations/versions/ab3d66c4246e_add_cache_timeout_to_druid_cluster.py
index 82982a18de4b4..07c9c9172699c 100644
--- a/superset/migrations/versions/ab3d66c4246e_add_cache_timeout_to_druid_cluster.py
+++ b/superset/migrations/versions/ab3d66c4246e_add_cache_timeout_to_druid_cluster.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add_cache_timeout_to_druid_cluster
 
 Revision ID: ab3d66c4246e
diff --git a/superset/migrations/versions/ad4d656d92bc_add_avg_metric.py b/superset/migrations/versions/ad4d656d92bc_add_avg_metric.py
index 83f36f7e3ee53..2adad5242d2dd 100644
--- a/superset/migrations/versions/ad4d656d92bc_add_avg_metric.py
+++ b/superset/migrations/versions/ad4d656d92bc_add_avg_metric.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add avg() to default metrics
 
 Revision ID: ad4d656d92bc
diff --git a/superset/migrations/versions/ad82a75afd82_add_query_model.py b/superset/migrations/versions/ad82a75afd82_add_query_model.py
index 1ae6f768ccb4d..5d2483a0111ad 100644
--- a/superset/migrations/versions/ad82a75afd82_add_query_model.py
+++ b/superset/migrations/versions/ad82a75afd82_add_query_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Update models to support storing the queries.
 
 Revision ID: ad82a75afd82
diff --git a/superset/migrations/versions/b318dfe5fb6c_adding_verbose_name_to_druid_column.py b/superset/migrations/versions/b318dfe5fb6c_adding_verbose_name_to_druid_column.py
index 42d841a30b43d..d492427b644f8 100644
--- a/superset/migrations/versions/b318dfe5fb6c_adding_verbose_name_to_druid_column.py
+++ b/superset/migrations/versions/b318dfe5fb6c_adding_verbose_name_to_druid_column.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """adding verbose_name to druid column
 
 Revision ID: b318dfe5fb6c
diff --git a/superset/migrations/versions/b347b202819b_.py b/superset/migrations/versions/b347b202819b_.py
index bd41d2216b28e..e0e8651f7a088 100644
--- a/superset/migrations/versions/b347b202819b_.py
+++ b/superset/migrations/versions/b347b202819b_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: b347b202819b
diff --git a/superset/migrations/versions/b4456560d4f3_change_table_unique_constraint.py b/superset/migrations/versions/b4456560d4f3_change_table_unique_constraint.py
index f6b89d829e9a2..5639454b1609d 100644
--- a/superset/migrations/versions/b4456560d4f3_change_table_unique_constraint.py
+++ b/superset/migrations/versions/b4456560d4f3_change_table_unique_constraint.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """change_table_unique_constraint
 
 Revision ID: b4456560d4f3
diff --git a/superset/migrations/versions/b46fa1b0b39e_add_params_to_tables.py b/superset/migrations/versions/b46fa1b0b39e_add_params_to_tables.py
index c07110ac20577..9d02ec5b4b105 100644
--- a/superset/migrations/versions/b46fa1b0b39e_add_params_to_tables.py
+++ b/superset/migrations/versions/b46fa1b0b39e_add_params_to_tables.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add json_metadata to the tables table.
 
 Revision ID: b46fa1b0b39e
diff --git a/superset/migrations/versions/bb51420eaf83_add_schema_to_table_model.py b/superset/migrations/versions/bb51420eaf83_add_schema_to_table_model.py
index 771d77efc3380..5e5d231111cc5 100644
--- a/superset/migrations/versions/bb51420eaf83_add_schema_to_table_model.py
+++ b/superset/migrations/versions/bb51420eaf83_add_schema_to_table_model.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """add schema to table model
 
 Revision ID: bb51420eaf83
diff --git a/superset/migrations/versions/bcf3126872fc_add_keyvalue.py b/superset/migrations/versions/bcf3126872fc_add_keyvalue.py
index 39b7bb4c75339..c58dad5eb1e17 100644
--- a/superset/migrations/versions/bcf3126872fc_add_keyvalue.py
+++ b/superset/migrations/versions/bcf3126872fc_add_keyvalue.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add keyvalue table
 
 Revision ID: bcf3126872fc
diff --git a/superset/migrations/versions/c3a8f8611885_materializing_permission.py b/superset/migrations/versions/c3a8f8611885_materializing_permission.py
index f852df68fb0d2..47cfa236ff2d9 100644
--- a/superset/migrations/versions/c3a8f8611885_materializing_permission.py
+++ b/superset/migrations/versions/c3a8f8611885_materializing_permission.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Materializing permission
 
 Revision ID: c3a8f8611885
diff --git a/superset/migrations/versions/c611f2b591b8_dim_spec.py b/superset/migrations/versions/c611f2b591b8_dim_spec.py
index 4ea66ec0fb64a..58d50871c1c21 100644
--- a/superset/migrations/versions/c611f2b591b8_dim_spec.py
+++ b/superset/migrations/versions/c611f2b591b8_dim_spec.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """dim_spec
 
 Revision ID: c611f2b591b8
diff --git a/superset/migrations/versions/ca69c70ec99b_tracking_url.py b/superset/migrations/versions/ca69c70ec99b_tracking_url.py
index 85901af11415f..8a2ef38295c67 100644
--- a/superset/migrations/versions/ca69c70ec99b_tracking_url.py
+++ b/superset/migrations/versions/ca69c70ec99b_tracking_url.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """tracking_url
 
 Revision ID: ca69c70ec99b
diff --git a/superset/migrations/versions/d2424a248d63_.py b/superset/migrations/versions/d2424a248d63_.py
index beba1c9f9f50c..fdfabc9166c21 100644
--- a/superset/migrations/versions/d2424a248d63_.py
+++ b/superset/migrations/versions/d2424a248d63_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: d2424a248d63
diff --git a/superset/migrations/versions/d39b1e37131d_.py b/superset/migrations/versions/d39b1e37131d_.py
index f132d62800031..adcaa7732bcd7 100644
--- a/superset/migrations/versions/d39b1e37131d_.py
+++ b/superset/migrations/versions/d39b1e37131d_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: d39b1e37131d
diff --git a/superset/migrations/versions/d6db5a5cdb5d_.py b/superset/migrations/versions/d6db5a5cdb5d_.py
index 3e7a76ae82280..7148c348c5474 100644
--- a/superset/migrations/versions/d6db5a5cdb5d_.py
+++ b/superset/migrations/versions/d6db5a5cdb5d_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: d6db5a5cdb5d
diff --git a/superset/migrations/versions/d827694c7555_css_templates.py b/superset/migrations/versions/d827694c7555_css_templates.py
index 9abd5fb2fa591..3b20e44055969 100644
--- a/superset/migrations/versions/d827694c7555_css_templates.py
+++ b/superset/migrations/versions/d827694c7555_css_templates.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """css templates
 
 Revision ID: d827694c7555
diff --git a/superset/migrations/versions/d8bc074f7aad_add_new_field_is_restricted_to_.py b/superset/migrations/versions/d8bc074f7aad_add_new_field_is_restricted_to_.py
index 0e4e92db27eef..9ccdf81602466 100644
--- a/superset/migrations/versions/d8bc074f7aad_add_new_field_is_restricted_to_.py
+++ b/superset/migrations/versions/d8bc074f7aad_add_new_field_is_restricted_to_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add new field 'is_restricted' to SqlMetric and DruidMetric
 
 Revision ID: d8bc074f7aad
diff --git a/superset/migrations/versions/db0c65b146bd_update_slice_model_json.py b/superset/migrations/versions/db0c65b146bd_update_slice_model_json.py
index e348ae06fba66..d4135562cf4a2 100644
--- a/superset/migrations/versions/db0c65b146bd_update_slice_model_json.py
+++ b/superset/migrations/versions/db0c65b146bd_update_slice_model_json.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """update_slice_model_json
 
 Revision ID: db0c65b146bd
diff --git a/superset/migrations/versions/db527d8c4c78_add_db_verbose_name.py b/superset/migrations/versions/db527d8c4c78_add_db_verbose_name.py
index 654f0c35c9447..4c0d4167f551f 100644
--- a/superset/migrations/versions/db527d8c4c78_add_db_verbose_name.py
+++ b/superset/migrations/versions/db527d8c4c78_add_db_verbose_name.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add verbose name to DruidCluster and Database
 
 Revision ID: db527d8c4c78
diff --git a/superset/migrations/versions/ddd6ebdd853b_annotations.py b/superset/migrations/versions/ddd6ebdd853b_annotations.py
index f218a65b2bf85..f8a3eef834a5c 100644
--- a/superset/migrations/versions/ddd6ebdd853b_annotations.py
+++ b/superset/migrations/versions/ddd6ebdd853b_annotations.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """annotations
 
 Revision ID: ddd6ebdd853b
diff --git a/superset/migrations/versions/e46f2d27a08e_materialize_perms.py b/superset/migrations/versions/e46f2d27a08e_materialize_perms.py
index d4a10419ecde4..9c1e157cfe91c 100644
--- a/superset/migrations/versions/e46f2d27a08e_materialize_perms.py
+++ b/superset/migrations/versions/e46f2d27a08e_materialize_perms.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """materialize perms
 
 Revision ID: e46f2d27a08e
diff --git a/superset/migrations/versions/e866bd2d4976_smaller_grid.py b/superset/migrations/versions/e866bd2d4976_smaller_grid.py
index 1388cd7816a3f..ad996d4c4c158 100644
--- a/superset/migrations/versions/e866bd2d4976_smaller_grid.py
+++ b/superset/migrations/versions/e866bd2d4976_smaller_grid.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """smaller_grid
 Revision ID: e866bd2d4976
 Revises: 21e88bc06c02
diff --git a/superset/migrations/versions/ea033256294a_.py b/superset/migrations/versions/ea033256294a_.py
index 2a08ebdbcdc33..8a5bbd21c32d4 100644
--- a/superset/migrations/versions/ea033256294a_.py
+++ b/superset/migrations/versions/ea033256294a_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: ea033256294a
diff --git a/superset/migrations/versions/eca4694defa7_sqllab_setting_defaults.py b/superset/migrations/versions/eca4694defa7_sqllab_setting_defaults.py
index 7bc2c46ae1ecc..b4f7038b2bf83 100644
--- a/superset/migrations/versions/eca4694defa7_sqllab_setting_defaults.py
+++ b/superset/migrations/versions/eca4694defa7_sqllab_setting_defaults.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """sqllab_setting_defaults
 
 Revision ID: eca4694defa7
diff --git a/superset/migrations/versions/ef8843b41dac_.py b/superset/migrations/versions/ef8843b41dac_.py
index 561272254671c..dec096b419f74 100644
--- a/superset/migrations/versions/ef8843b41dac_.py
+++ b/superset/migrations/versions/ef8843b41dac_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: ef8843b41dac
diff --git a/superset/migrations/versions/f0fbf6129e13_adding_verbose_name_to_tablecolumn.py b/superset/migrations/versions/f0fbf6129e13_adding_verbose_name_to_tablecolumn.py
index f09b08a351a1f..51f4923b9cedf 100644
--- a/superset/migrations/versions/f0fbf6129e13_adding_verbose_name_to_tablecolumn.py
+++ b/superset/migrations/versions/f0fbf6129e13_adding_verbose_name_to_tablecolumn.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Adding verbose_name to tablecolumn
 
 Revision ID: f0fbf6129e13
diff --git a/superset/migrations/versions/f162a1dea4c4_d3format_by_metric.py b/superset/migrations/versions/f162a1dea4c4_d3format_by_metric.py
index 391bdbd013723..9e266e23a7296 100644
--- a/superset/migrations/versions/f162a1dea4c4_d3format_by_metric.py
+++ b/superset/migrations/versions/f162a1dea4c4_d3format_by_metric.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """d3format_by_metric
 
 Revision ID: f162a1dea4c4
diff --git a/superset/migrations/versions/f18570e03440_add_query_result_key_index.py b/superset/migrations/versions/f18570e03440_add_query_result_key_index.py
index 32d3b00d3176c..383e7b0e3b724 100644
--- a/superset/migrations/versions/f18570e03440_add_query_result_key_index.py
+++ b/superset/migrations/versions/f18570e03440_add_query_result_key_index.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Add index on the result key to the query table.
 
 Revision ID: f18570e03440
diff --git a/superset/migrations/versions/f1f2d4af5b90_.py b/superset/migrations/versions/f1f2d4af5b90_.py
index 8c77f715355c1..36bae518ce063 100644
--- a/superset/migrations/versions/f1f2d4af5b90_.py
+++ b/superset/migrations/versions/f1f2d4af5b90_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Enable Filter Select
 
 Revision ID: f1f2d4af5b90
diff --git a/superset/migrations/versions/f959a6652acd_.py b/superset/migrations/versions/f959a6652acd_.py
index 73b7fcb0033d1..96186a6e3a006 100644
--- a/superset/migrations/versions/f959a6652acd_.py
+++ b/superset/migrations/versions/f959a6652acd_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: f959a6652acd
diff --git a/superset/migrations/versions/fee7b758c130_.py b/superset/migrations/versions/fee7b758c130_.py
index 5b2e88d95d13d..28b05b17e3e7d 100644
--- a/superset/migrations/versions/fee7b758c130_.py
+++ b/superset/migrations/versions/fee7b758c130_.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """empty message
 
 Revision ID: fee7b758c130
diff --git a/superset/models/__init__.py b/superset/models/__init__.py
index 2084aee0c99e0..ed8b5911258c0 100644
--- a/superset/models/__init__.py
+++ b/superset/models/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from . import core  # noqa
 from . import sql_lab  # noqa
 from . import user_attributes  # noqa
diff --git a/superset/models/annotations.py b/superset/models/annotations.py
index e0d74f933c6a0..aa78d26236acb 100644
--- a/superset/models/annotations.py
+++ b/superset/models/annotations.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """a collection of Annotation-related models"""
 from flask_appbuilder import Model
diff --git a/superset/models/core.py b/superset/models/core.py
index 3334bf94f51d7..7e1aaf4d4e2b1 100644
--- a/superset/models/core.py
+++ b/superset/models/core.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """A collection of ORM sqlalchemy models for Superset"""
 from contextlib import closing
diff --git a/superset/models/helpers.py b/superset/models/helpers.py
index cb90deea79c29..6cefc483c7d31 100644
--- a/superset/models/helpers.py
+++ b/superset/models/helpers.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """a collection of model-related helper classes and functions"""
 from datetime import datetime
diff --git a/superset/models/sql_lab.py b/superset/models/sql_lab.py
index 91450ac857efc..f36d3ff710656 100644
--- a/superset/models/sql_lab.py
+++ b/superset/models/sql_lab.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """A collection of ORM sqlalchemy models for SQL Lab"""
 from datetime import datetime
diff --git a/superset/models/user_attributes.py b/superset/models/user_attributes.py
index 7fcfb4d45a75d..04c56a6e0e12b 100644
--- a/superset/models/user_attributes.py
+++ b/superset/models/user_attributes.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from flask_appbuilder import Model
 from sqlalchemy import Column, ForeignKey, Integer
 from sqlalchemy.orm import relationship
diff --git a/superset/security.py b/superset/security.py
index 2176423d03cae..c0f6f37cea7bf 100644
--- a/superset/security.py
+++ b/superset/security.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """A set of constants and methods to manage permissions and security"""
 import logging
diff --git a/superset/sql_lab.py b/superset/sql_lab.py
index 8c16cfc74a840..b2dde1337d7f9 100644
--- a/superset/sql_lab.py
+++ b/superset/sql_lab.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime
 import logging
diff --git a/superset/sql_parse.py b/superset/sql_parse.py
index 5bff7413280ab..2f54f77a96154 100644
--- a/superset/sql_parse.py
+++ b/superset/sql_parse.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import logging
 
diff --git a/superset/stats_logger.py b/superset/stats_logger.py
index 7d0812c5356a1..098f53f615e26 100644
--- a/superset/stats_logger.py
+++ b/superset/stats_logger.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import logging
 
diff --git a/superset/translations/utils.py b/superset/translations/utils.py
index a2bba66811957..c97f40d19330f 100644
--- a/superset/translations/utils.py
+++ b/superset/translations/utils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import json
 import os
diff --git a/superset/utils.py b/superset/utils.py
index aa802098f1638..a15f382533fa2 100644
--- a/superset/utils.py
+++ b/superset/utils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """Utility functions used across Superset"""
 from builtins import object
diff --git a/superset/views/__init__.py b/superset/views/__init__.py
index a95da8bebb8b0..506f0d7346bd0 100644
--- a/superset/views/__init__.py
+++ b/superset/views/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from . import base  # noqa
 from . import core  # noqa
 from . import sql_lab  # noqa
diff --git a/superset/views/annotations.py b/superset/views/annotations.py
index 26df76de59736..63e95e30a06cd 100644
--- a/superset/views/annotations.py
+++ b/superset/views/annotations.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from flask_appbuilder.models.sqla.interface import SQLAInterface
 from flask_babel import gettext as __
diff --git a/superset/views/base.py b/superset/views/base.py
index 6173a203375c8..2b3bb430b5257 100644
--- a/superset/views/base.py
+++ b/superset/views/base.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime
 import functools
diff --git a/superset/views/core.py b/superset/views/core.py
index 18bc9aa0670ea..05ef4315e28ad 100755
--- a/superset/views/core.py
+++ b/superset/views/core.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from datetime import datetime, timedelta
 import inspect
diff --git a/superset/views/datasource.py b/superset/views/datasource.py
index 83c66a77365b8..db37ce7037a36 100644
--- a/superset/views/datasource.py
+++ b/superset/views/datasource.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 import json
 
diff --git a/superset/views/sql_lab.py b/superset/views/sql_lab.py
index 5117b3df719fe..d60fd3d6d89e5 100644
--- a/superset/views/sql_lab.py
+++ b/superset/views/sql_lab.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from flask import g, redirect
 from flask_appbuilder import expose
diff --git a/superset/views/utils.py b/superset/views/utils.py
index edb142adc7ed4..b970914502cf6 100644
--- a/superset/views/utils.py
+++ b/superset/views/utils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 from collections import defaultdict
 
diff --git a/superset/viz.py b/superset/viz.py
index 1753a87120e63..342d8e2f058a6 100644
--- a/superset/viz.py
+++ b/superset/viz.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # pylint: disable=C,R,W
 """This module contains the 'Viz' objects
 
diff --git a/tests/access_tests.py b/tests/access_tests.py
index a9dc27d442f1b..f19e47bad800d 100644
--- a/tests/access_tests.py
+++ b/tests/access_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 import unittest
diff --git a/tests/base_tests.py b/tests/base_tests.py
index 990f78dc801dd..e75ceeac732a3 100644
--- a/tests/base_tests.py
+++ b/tests/base_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 import logging
diff --git a/tests/cache_tests.py b/tests/cache_tests.py
index 5b4f50322de12..8d6480218176a 100644
--- a/tests/cache_tests.py
+++ b/tests/cache_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset with caching"""
 import json
 
diff --git a/tests/celery_tests.py b/tests/celery_tests.py
index 935c75b162bbe..531cd298e63d8 100644
--- a/tests/celery_tests.py
+++ b/tests/celery_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset Celery worker"""
 import json
 import subprocess
diff --git a/tests/core_tests.py b/tests/core_tests.py
index 768d0216a3dec..90efa7c490997 100644
--- a/tests/core_tests.py
+++ b/tests/core_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import csv
 import datetime
diff --git a/tests/dashboard_tests.py b/tests/dashboard_tests.py
index b455ef229552c..0bfbeaf18865a 100644
--- a/tests/dashboard_tests.py
+++ b/tests/dashboard_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 import unittest
diff --git a/tests/dataframe_test.py b/tests/dataframe_test.py
index 2ffd4ce9c0b6d..5bcff19ff62ba 100644
--- a/tests/dataframe_test.py
+++ b/tests/dataframe_test.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import numpy as np
 
 from superset.dataframe import dedup, SupersetDataFrame
diff --git a/tests/datasource_tests.py b/tests/datasource_tests.py
index 24aa430ab0714..b9f86934ba0ff 100644
--- a/tests/datasource_tests.py
+++ b/tests/datasource_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 
diff --git a/tests/db_engine_specs_test.py b/tests/db_engine_specs_test.py
index c39344e5d88a3..b72052f62092f 100644
--- a/tests/db_engine_specs_test.py
+++ b/tests/db_engine_specs_test.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import inspect
 
 from superset import db_engine_specs
diff --git a/tests/dict_import_export_tests.py b/tests/dict_import_export_tests.py
index 1f8ea64a79ecd..bde8caa129f94 100644
--- a/tests/dict_import_export_tests.py
+++ b/tests/dict_import_export_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 import unittest
diff --git a/tests/druid_func_tests.py b/tests/druid_func_tests.py
index 2724f59ef4688..905994551fb4f 100644
--- a/tests/druid_func_tests.py
+++ b/tests/druid_func_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import json
 import unittest
 
diff --git a/tests/druid_tests.py b/tests/druid_tests.py
index 9fa75fb6dec9f..9d13db97e274d 100644
--- a/tests/druid_tests.py
+++ b/tests/druid_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 from datetime import datetime
 import json
diff --git a/tests/email_tests.py b/tests/email_tests.py
index 219540af7bcb0..a7f215d9c8d0d 100644
--- a/tests/email_tests.py
+++ b/tests/email_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for email service in Superset"""
 from email.mime.application import MIMEApplication
 from email.mime.multipart import MIMEMultipart
diff --git a/tests/fixtures/datasource.py b/tests/fixtures/datasource.py
index b6d8c6784a853..1265eb865a11f 100644
--- a/tests/fixtures/datasource.py
+++ b/tests/fixtures/datasource.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Fixtures for test_datasource.py"""
 datasource_post = {
     'id': None,
diff --git a/tests/form_tests.py b/tests/form_tests.py
index f77a725bf32e3..62e4da045ff51 100644
--- a/tests/form_tests.py
+++ b/tests/form_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from wtforms.form import Form
 
 from superset.forms import (
diff --git a/tests/import_export_tests.py b/tests/import_export_tests.py
index aa025cd3ed2e5..a327a477c2ef2 100644
--- a/tests/import_export_tests.py
+++ b/tests/import_export_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Superset"""
 import json
 import unittest
diff --git a/tests/macro_tests.py b/tests/macro_tests.py
index c18b028d674eb..0dcf4b68d3ce7 100644
--- a/tests/macro_tests.py
+++ b/tests/macro_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from flask import json
 
 from superset import app
diff --git a/tests/model_tests.py b/tests/model_tests.py
index 8e80c6a3f8a12..348643b4bf100 100644
--- a/tests/model_tests.py
+++ b/tests/model_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import textwrap
 
 from sqlalchemy.engine.url import make_url
diff --git a/tests/security_tests.py b/tests/security_tests.py
index ceedb40d42697..edeb2b7bd42e2 100644
--- a/tests/security_tests.py
+++ b/tests/security_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from superset import app, security_manager
 from .base_tests import SupersetTestCase
 
diff --git a/tests/sql_parse_tests.py b/tests/sql_parse_tests.py
index f08d3e7cd1813..4499433d272c1 100644
--- a/tests/sql_parse_tests.py
+++ b/tests/sql_parse_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import unittest
 
 from superset import sql_parse
diff --git a/tests/sqllab_tests.py b/tests/sqllab_tests.py
index 228abc74f5c22..fca532e52812d 100644
--- a/tests/sqllab_tests.py
+++ b/tests/sqllab_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Unit tests for Sql Lab"""
 from datetime import datetime, timedelta
 import json
diff --git a/tests/superset_test_config.py b/tests/superset_test_config.py
index aacbd6a0ad76e..6b7aef5c95490 100644
--- a/tests/superset_test_config.py
+++ b/tests/superset_test_config.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # flake8: noqa
 from superset.config import *
 
diff --git a/tests/utils.py b/tests/utils.py
index 8aeef463d4ee5..59ec1d7a7b886 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 import json
 from os import path
 
diff --git a/tests/utils_tests.py b/tests/utils_tests.py
index 9646ffa0fdd9a..643da47dff76c 100644
--- a/tests/utils_tests.py
+++ b/tests/utils_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from datetime import date, datetime, time, timedelta
 from decimal import Decimal
 import unittest
diff --git a/tests/viz_tests.py b/tests/viz_tests.py
index 7325792d68735..fb11027c9f75e 100644
--- a/tests/viz_tests.py
+++ b/tests/viz_tests.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from datetime import datetime
 import uuid