Dropping Python 2.7 host support

.circleci/config.yml

@@ -1,11 +1,11 @@
 version: 2
 
 jobs:
-  osx-python2:
+  osx-python3.6:
     macos:
-      xcode: "10.0.0"
+      xcode: "9.4.1"
     environment:
-      PYTHON: python2
+      PYTHON: python3
     steps:
       - checkout
 
@@ -16,7 +16,7 @@ jobs:
           name: Test.
           command: venv/bin/python ./bin/run_tests.py
 
-  osx-python3:
+  osx-python3.7:
     macos:
       xcode: "10.0.0"
     environment:
@@ -31,23 +31,7 @@ jobs:
           name: Test.
           command: venv/bin/python ./bin/run_tests.py
 
-  linux-python2:
-    docker:
-      - image: circleci/python:2.7
-    environment:
-      PYTHON: python2
-    steps:
-      - checkout
-      - setup_remote_docker
-
-      - run:
-          name: Prepare the environment.
-          command: bash .circleci/prepare.sh
-      - run:
-          name: Test.
-          command: venv/bin/python ./bin/run_tests.py
-
-  linux-python3:
+  linux-python3.6:
     docker:
       - image: circleci/python:3.6
     environment:
@@ -67,7 +51,6 @@ workflows:
   version: 2
   all-tests:
     jobs:
-      - osx-python2
-      - osx-python3
-      - linux-python2
-      - linux-python3
+      - osx-python3.6
+      - osx-python3.7
+      - linux-python3.6

.travis.yml

@@ -2,13 +2,6 @@ language: generic
 
 matrix:
   include:
-    # Linux Python 2
-    - sudo: required
-      language: python
-      python: 2.7
-      services: docker
-      env: PYTHON=python
-
     # Linux Python 3
     - sudo: required
       language: python

CI.md

@@ -0,0 +1,9 @@
+This is a summary of the Python versions and platforms covered by the different CI platforms:
+
+|          | 3.5              | 3.6              | 3.7                   | 3.8              |
+|----------|------------------|------------------|-----------------------|------------------|
+| Linux    | Travis CI        | CircleCI         | AppVeyor              | Azure Pipelines  |
+| macOS    | Azure Pipelines  | CircleCI         | Travis CI¹ / CircleCI | Azure Pipelines  |
+| Windows  | TravisCI         | Azure Pipelines  | AppVeyor              | Azure Pipelines  |
+
+> ¹ Python version not really pinned, but dependent on the (default) version of image used.

appveyor.yml

@@ -3,9 +3,9 @@ image:
   - Visual Studio 2015
 
 build_script:
-  - cmd: "C:\\Python27\\python.exe -m pip install -r requirements-dev.txt"
+  - cmd: "C:\\Python37\\python.exe -m pip install -r requirements-dev.txt"
   - sh: "${HOME}/.localpython3.7.4/bin/python3 -m pip install -r requirements-dev.txt"
   # the '-u' flag is required so the output is in the correct order.
   # See https://github.com/joerick/cibuildwheel/pull/24 for more info.
-  - cmd: "C:\\Python27\\python.exe -u ./bin/run_tests.py"
+  - cmd: "C:\\Python37\\python.exe -u ./bin/run_tests.py"
   - sh: "${HOME}/.localpython3.7.4/bin/python3 ./bin/run_tests.py"

azure-pipelines.yml

@@ -1,5 +1,5 @@
 jobs:
-- job: linux
+- job: linux_38
   pool: {vmImage: 'Ubuntu-18.04'}
   steps:
     - task: UsePythonVersion@0
@@ -9,7 +9,17 @@ jobs:
         python -m pip install -r requirements-dev.txt
         python ./bin/run_tests.py
 
-- job: macos
+- job: macos_35
+  pool: {vmImage: 'macOS-10.13'}
+  steps:
+    - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.5'
+    - bash: |
+        python -m pip install -r requirements-dev.txt
+        python ./bin/run_tests.py
+
+- job: macos_38
   pool: {vmImage: 'macOS-10.13'}
   steps:
     - task: UsePythonVersion@0
@@ -19,7 +29,19 @@ jobs:
         python -m pip install -r requirements-dev.txt
         python ./bin/run_tests.py
 
-- job: windows
+- job: windows_36
+  pool: {vmImage: 'vs2017-win2016'}
+  steps:
+    - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.6'
+    - script: choco install vcpython27 -f -y
+      displayName: Install Visual C++ for Python 2.7
+    - bash: |
+        python -m pip install -r requirements-dev.txt
+        python ./bin/run_tests.py
+
+- job: windows_38
   pool: {vmImage: 'vs2017-win2016'}
   steps:
     - task: UsePythonVersion@0

bin/run_test.py

@@ -1,6 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
-from __future__ import print_function
 import os, sys, subprocess, shutil
 
 

bin/run_tests.py

@@ -1,6 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
-from __future__ import print_function
 import os, sys, subprocess, shutil, json
 from glob import glob
 

cibuildwheel/__main__.py

@@ -1,4 +1,3 @@
-from __future__ import print_function
 import argparse, os, subprocess, sys, textwrap
 
 import cibuildwheel

cibuildwheel/bashlex_eval.py

@@ -60,12 +60,8 @@ def evaluate_word_node(node, context):
 def evaluate_command_node(node, context):
     words = [evaluate_node(part, context=context) for part in node.parts]
     command = ' '.join(words)
-    output = subprocess.check_output(shlex.split(command), env=context.environment)
+    return subprocess.check_output(shlex.split(command), env=context.environment, universal_newlines=True)
 
-    if sys.version_info[0] >= 3:
-        return output.decode('utf8', 'replace')
-    else:
-        return output
 
 def evaluate_parameter_node(node, context):
     return context.environment.get(node.value, '')

cibuildwheel/environment.py

@@ -41,7 +41,7 @@ def split_env_items(env_string):
     return result
 
 
-class EnvironmentAssignment(object):
+class EnvironmentAssignment:
     def __init__(self, assignment):
         name, equals, value = assignment.partition('=')
         if not equals:
@@ -60,7 +60,7 @@ def __repr__(self):
         return '%s=%s' % (self.name, self.value)
 
 
-class ParsedEnvironment(object):
+class ParsedEnvironment:
     def __init__(self, assignments):
         self.assignments = assignments
 

cibuildwheel/linux.py

@@ -1,13 +1,7 @@
-from __future__ import print_function
-import os, subprocess, sys, uuid, textwrap
+import os, shlex, subprocess, sys, textwrap, uuid
 from collections import namedtuple
 from .util import prepare_command, get_build_verbosity_extra_flags
 
-try:
-    from shlex import quote as shlex_quote
-except ImportError:
-    from pipes import quote as shlex_quote
-
 
 def get_python_configurations(build_selector):
     PythonConfiguration = namedtuple('PythonConfiguration', ['identifier', 'path'])
@@ -132,53 +126,39 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
             pybin_paths=' '.join(c.path+'/bin' for c in platform_configs),
             test_requires=' '.join(test_requires),
             test_extras=test_extras,
-            test_command=shlex_quote(
+            test_command=shlex.quote(
                 prepare_command(test_command, project='/project') if test_command else ''
             ),
-            before_build=shlex_quote(
+            before_build=shlex.quote(
                 prepare_command(before_build, project='/project') if before_build else ''
             ),
             build_verbosity_flag=' '.join(get_build_verbosity_extra_flags(build_verbosity)),
-            repair_command=shlex_quote(
+            repair_command=shlex.quote(
                 prepare_command(repair_command, wheel='"$1"', dest_dir='/tmp/repaired_wheels') if repair_command else ''
             ),
             environment_exports='\n'.join(environment.as_shell_commands()),
             uid=os.getuid(),
             gid=os.getgid(),
         )
 
-        def run_docker(command, stdin_str=None):
-            print('docker command: docker {}'.format(' '.join(map(shlex_quote, command))))
-            if stdin_str is None:
-                subprocess.check_call(['docker'] + command)
-            else:
-                args = ['docker'] + command
-                process = subprocess.Popen(args, stdin=subprocess.PIPE, universal_newlines=True)
-                try:
-                    process.communicate(stdin_str)
-                except KeyboardInterrupt:
-                    process.kill()
-                    process.wait()
-                if process.returncode != 0:
-                    raise subprocess.CalledProcessError(process.returncode, args)
-
         container_name = 'cibuildwheel-{}'.format(uuid.uuid4())
         try:
-            run_docker(['create',
-                        '--env', 'CIBUILDWHEEL',
-                        '--name', container_name,
-                        '-i',
-                        '-v', '/:/host', # ignored on Circle
-                        docker_image, '/bin/bash'])
-            run_docker(['cp', os.path.abspath(project_dir) + '/.', container_name + ':/project'])
-            run_docker(['start', '-i', '-a', container_name], stdin_str=bash_script)
-            run_docker(['cp', container_name + ':/output/.', os.path.abspath(output_dir)])
+            subprocess.run(['docker', 'create',
+                            '--env', 'CIBUILDWHEEL',
+                            '--name', container_name,
+                            '-i',
+                            '-v', '/:/host', # ignored on CircleCI
+                            docker_image, '/bin/bash'],
+                            check=True)
+            subprocess.run(['docker', 'cp', os.path.abspath(project_dir) + '/.', container_name + ':/project'], check=True)
+            subprocess.run(['docker', 'start', '-i', '-a', container_name], input=bash_script, universal_newlines=True, check=True)
+            subprocess.run(['docker', 'cp', container_name + ':/output/.', os.path.abspath(output_dir)], check=True)
         except subprocess.CalledProcessError as error:
             troubleshoot(project_dir, error)
             exit(1)
         finally:
             # Still gets executed, even when 'exit(1)' gets called
-            run_docker(['rm', '--force', '-v', container_name])
+            subprocess.run(['docker', 'rm', '--force', '-v', container_name], check=True)
 
 
 def troubleshoot(project_dir, error):

cibuildwheel/macos.py

@@ -1,12 +1,7 @@
-from __future__ import print_function
 import tempfile
 import os, subprocess, shlex, sys, shutil
 from collections import namedtuple
 from glob import glob
-try:
-    from shlex import quote as shlex_quote
-except ImportError:
-    from pipes import quote as shlex_quote
 
 from .util import prepare_command, get_build_verbosity_extra_flags, download
 
@@ -36,17 +31,15 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
     get_pip_url = 'https://bootstrap.pypa.io/get-pip.py'
     get_pip_script = '/tmp/get-pip.py'
 
-    pkgs_output = subprocess.check_output(['pkgutil',  '--pkgs'])
-    if sys.version_info[0] >= 3:
-        pkgs_output = pkgs_output.decode('utf8')
+    pkgs_output = subprocess.check_output(['pkgutil',  '--pkgs'], universal_newlines=True)
     installed_system_packages = pkgs_output.splitlines()
 
     def call(args, env=None, cwd=None, shell=False):
         # print the command executing for the logs
         if shell:
             print('+ %s' % args)
         else:
-            print('+ ' + ' '.join(shlex_quote(a) for a in args))
+            print('+ ' + ' '.join(shlex.quote(a) for a in args))
 
         return subprocess.check_call(args, env=env, cwd=cwd, shell=shell)
 

cibuildwheel/util.py

@@ -1,13 +1,8 @@
 from fnmatch import fnmatch
 import warnings
-import os
+import os, urllib.request
 from time import sleep
 
-try:
-    from urllib.request import urlopen
-except ImportError:
-    from urllib2 import urlopen
-
 
 def prepare_command(command, **kwargs):
     '''
@@ -28,7 +23,7 @@ def get_build_verbosity_extra_flags(level):
         return []
 
 
-class BuildSelector(object):
+class BuildSelector:
     def __init__(self, build_config, skip_config):
         self.build_patterns = build_config.split()
         self.skip_patterns = skip_config.split()
@@ -43,7 +38,7 @@ def __repr__(self):
 
 
 # Taken from https://stackoverflow.com/a/107717
-class Unbuffered(object):
+class Unbuffered:
     def __init__(self, stream):
         self.stream = stream
 
@@ -68,7 +63,7 @@ def download(url, dest):
     repeat_num = 3
     for i in range(repeat_num):
         try:
-            response = urlopen(url)
+            response = urllib.request.urlopen(url)
         except:
             if i == repeat_num - 1:
                 raise

cibuildwheel/windows.py

@@ -1,13 +1,7 @@
-from __future__ import print_function
 import os, tempfile, subprocess, shutil, sys
 from collections import namedtuple
 from glob import glob
 
-try:
-    from shlex import quote as shlex_quote
-except ImportError:
-    from pipes import quote as shlex_quote
-
 from .util import prepare_command, get_build_verbosity_extra_flags, download
 
 

setup.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 import os, io
 
@@ -28,12 +27,11 @@
         'cibuildwheel': ['resources/*'],
     },
     # Supported python versions
-    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
+    python_requires='>=3.5',
     keywords='ci wheel packaging pypi travis appveyor macos linux windows',
     classifiers=[
         'Intended Audience :: Developers',
         'Natural Language :: English',
-        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3',
         'Development Status :: 5 - Production/Stable',
         'License :: OSI Approved :: BSD License',

unit_test/main_util_fixtures.py

@@ -7,7 +7,7 @@
 from cibuildwheel import linux, macos, windows, util
 
 
-class ArgsInterceptor(object):
+class ArgsInterceptor:
     def __call__(self, *args, **kwargs):
         self.args = args
         self.kwargs = kwargs