Drop support for python 3.5 (#617)

.pre-commit-config.yaml

@@ -9,6 +9,7 @@ repos:
         rev: 19.10b0
         hooks:
         -   id: black
+            args: [--target-version, py36]
     -   repo: https://github.com/timothycrosley/isort
         rev: 4.3.21
         hooks:

.travis.yml

@@ -26,7 +26,6 @@ matrix:
       os: osx
       env:
         - PYTHON=3.6.8
-    - python: 3.5
     - python: 3.6
     - python: 3.6
       env:

Makefile

@@ -68,14 +68,14 @@ check-type:
 	mypy pyproj
 
 check: lint check-type ## flake8 black isort check
-	black --check setup.py pyproj/ test/ docs/
+	black --check --target-version py36 setup.py pyproj/ test/ docs/
 	isort --check --recursive setup.py pyproj/ test/ docs/
 
 isort: ## order imports
 	isort --recursive setup.py pyproj/ test/ docs/
 
 black: ## black format files
-	black setup.py pyproj/ test/ docs/
+	black --target-version py36 setup.py pyproj/ test/ docs/
 
 test: ## run tests
 	py.test

docs/advanced_examples.rst

@@ -93,7 +93,7 @@ transformations as well as missing transformations.
     >>> from pyproj.transformer import TransformerGroup
     >>> tg = TransformerGroup("epsg:4326", "+proj=aea +lat_0=50 +lon_0=-154 +lat_1=55 +lat_2=65 +x_0=0 +y_0=0 +datum=NAD27 +no_defs +type=crs +units=m", always_xy=True)
     UserWarning: Best transformation is not available due to missing Grid(short_name=ntv2_0.gsb, full_name=, package_name=proj-datumgrid-north-america, url=https://download.osgeo.org/proj/proj-datumgrid-north-america-latest.zip, direct_download=True, open_license=True, available=False)
-    "{!r}".format(operation.grids[0])
+    f"{operation.grids[0]!r}"
     >>> tg
     <TransformerGroup: best_available=False>
     - transformers: 37

docs/conf.py

@@ -53,9 +53,9 @@
 master_doc = "index"
 
 # General information about the project.
-project = u"pyproj"
-copyright = u"2006-2018, Jeffrey Whitaker; 2019-2020, Open source contributors"
-author = u"Jeffrey Whitaker"
+project = "pyproj"
+copyright = "2006-2018, Jeffrey Whitaker; 2019-2020, Open source contributors"
+author = "Jeffrey Whitaker"
 
 # The version info for the project you're documenting, acts as replacement
 # for |version| and |release|, also used in various other places throughout
@@ -131,15 +131,15 @@
 # (source start file, target name, title, author, documentclass
 # [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, "pyproj.tex", u"pyproj Documentation", u"Delta", "manual")
+    (master_doc, "pyproj.tex", "pyproj Documentation", "Delta", "manual")
 ]
 
 
 # -- Options for manual page output ------------------------------------
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
-man_pages = [(master_doc, "pyproj", u"pyproj Documentation", [author], 1)]
+man_pages = [(master_doc, "pyproj", "pyproj Documentation", [author], 1)]
 
 
 # -- Options for Texinfo output ----------------------------------------
@@ -151,7 +151,7 @@
     (
         master_doc,
         "pyproj",
-        u"pyproj Documentation",
+        "pyproj Documentation",
         author,
         "pyproj",
         "One line description of project.",

docs/examples.rst

@@ -402,7 +402,7 @@ Calculate the geodesic length of a line (See: :meth:`pyproj.Geod.line_length`):
     ...         88, 59, 25, -4, -14, -33, -46, -61]
     >>> geod = Geod(ellps="WGS84")
     >>> total_length = geod.line_length(lons, lats)
-    >>> "{:.3f}".format(total_length)
+    >>> f"{total_length:.3f}"
     '14259605.611'
 
 Calculate the geodesic length of a shapely geometry (See: :meth:`pyproj.Geod.geometry_length`):
@@ -414,7 +414,7 @@ Calculate the geodesic length of a shapely geometry (See: :meth:`pyproj.Geod.geo
     >>> line_string = LineString([Point(1, 2), Point(3, 4)]))
     >>> geod = Geod(ellps="WGS84")
     >>> total_length = geod.geometry_length(line_string)
-    >>> "{:.3f}".format(total_length)
+    >>> f"{total_length:.3f}"
     '313588.397'
 
 
@@ -432,7 +432,7 @@ Calculate the geodesic area and perimeter of a polygon (See: :meth:`pyproj.Geod.
     >>> lons = [-74, -102, -102, -131, -163, 163, 172, 140, 113,
     ...         88, 59, 25, -4, -14, -33, -46, -61]
     >>> poly_area, poly_perimeter = geod.polygon_area_perimeter(lons, lats)
-    >>> "{:.3f} {:.3f}".format(poly_area, poly_perimeter)
+    >>> f"{poly_area:.3f} {poly_perimeter:.3f}"
     '13376856682207.406 14710425.407'
 
 
@@ -450,5 +450,5 @@ Calculate the geodesic area and perimeter of a shapely polygon (See: :meth:`pypr
                 holes=[LineString([Point(1, 2), Point(3, 4), Point(5, 2)])],
             )
         )
-    >>> "{:.3f} {:.3f}".format(poly_area, poly_perimeter)
+    >>> f"{poly_area:.3f} {poly_perimeter:.3f}"
     '-944373881400.339 3979008.036'

docs/history.rst

@@ -1,6 +1,10 @@
 Change Log
 ==========
 
+3.0.0
+-----
+* Minimum supported Python version 3.6 (issue #499)
+
 2.6.1
 ~~~~~
 * WHL: Wheels contain PROJ version is 7.0.1

docs/index.rst

@@ -5,7 +5,7 @@ Python interface to  `PROJ <https://proj.org/>`_ (cartographic projections and c
 
 .. note:: Minimum supported PROJ version is 6.2.0
 
-.. note:: Minimum supported Python version is 3.5
+.. note:: Minimum supported Python version is 3.6
 
 GitHub Repository: https://github.com/pyproj4/pyproj
 

pyproj/__init__.py

@@ -4,7 +4,7 @@
 
 Download: http://python.org/pypi/pyproj
 
-Requirements: Python 3.5+.
+Requirements: Python 3.6+.
 
 Contact:  Jeffrey Whitaker <[email protected]>
 

pyproj/__main__.py

@@ -20,5 +20,5 @@
 if args.verbose:
     _show_versions.show_versions()
 else:
-    print("pyproj version: {} [PROJ version: {}]".format(__version__, __proj_version__))
+    print(f"pyproj version: {__version__} [PROJ version: {__proj_version__}]")
     parser.print_help()