Drop support for Python 3.3

.travis.yml

@@ -22,8 +22,6 @@ matrix:
     - env: TOXENV=py36
       python: 3.6
     # All the other Py3 versions
-    - env: TOXENV=py33
-      python: 3.3
     - env: TOXENV=py34
       python: 3.4
     - env: TOXENV=py35

appveyor.yml

 environment:
   matrix:
-    # Unit and integration tests. 
+    # Unit and integration tests.
     - PYTHON: "C:\\Python27"
       RUN_INTEGRATION_TESTS: "True"
     - PYTHON: "C:\\Python36-x64"
       RUN_INTEGRATION_TESTS: "True"
     # Unit tests only.
     - PYTHON: "C:\\Python27-x64"
-    - PYTHON: "C:\\Python33"
-    - PYTHON: "C:\\Python33-x64"
     - PYTHON: "C:\\Python34"
     - PYTHON: "C:\\Python34-x64"
     - PYTHON: "C:\\Python35"

docs/installing.rst

@@ -102,7 +102,7 @@ On Windows [4]_::
 Python and OS Compatibility
 ---------------------------
 
-pip works with CPython versions 2.7, 3.3, 3.4, 3.5, 3.6 and also pypy.
+pip works with CPython versions 2.7, 3.4, 3.5, 3.6 and also pypy.
 
 This means pip works on the latest patch version of each of these minor
 versions. Previous patch versions are supported on a best effort approach.

news/3796.removal

+Dropped support for Python 3.3.

setup.py

@@ -51,7 +51,6 @@ setup(
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
@@ -83,7 +82,7 @@ setup(
     },
     tests_require=tests_require,
     zip_safe=False,
-    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*',
+    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*',
     extras_require={
         'testing': tests_require,
     },

src/pip/_internal/basecommand.py

@@ -6,7 +6,6 @@ import logging.config
 import optparse
 import os
 import sys
-import warnings
 
 from pip._internal import cmdoptions
 from pip._internal.baseparser import (
@@ -26,7 +25,6 @@ from pip._internal.status_codes import (
     ERROR, PREVIOUS_BUILD_DIR_ERROR, SUCCESS, UNKNOWN_ERROR,
     VIRTUALENV_NOT_FOUND,
 )
-from pip._internal.utils import deprecation
 from pip._internal.utils.logging import IndentingFormatter
 from pip._internal.utils.misc import get_prog, normalize_path
 from pip._internal.utils.outdated import pip_version_check
@@ -198,13 +196,6 @@ class Command(object):
             },
         })
 
-        if sys.version_info[:2] == (3, 3):
-            warnings.warn(
-                "Python 3.3 support has been deprecated and will be dropped "
-                "in the future. Please upgrade your Python.",
-                deprecation.RemovedInPip11Warning,
-            )
-
         # TODO: try to get these passing down from the command?
         #      without resorting to os.environ to hold these.
 

tests/functional/test_install.py

@@ -32,16 +32,11 @@ def test_pep518_uses_build_env(script, data, original_setuptools):
         raise ValueError(original_setuptools)
     to_install = data.src.join("pep518-3.0")
     for command in ('install', 'wheel'):
-        kwargs = {}
-        if sys.version_info[:2] == (3, 3):
-            # Ignore Python 3.3 deprecation warning...
-            kwargs['expect_stderr'] = True
         script.run(
             "python", "-c",
             "import pip._internal; pip._internal.main(["
             "%r, " "'-f', %r, " "%r, "
             "])" % (command, str(data.packages), str(to_install)),
-            **kwargs
         )
 
 
@@ -55,16 +50,11 @@ def test_pep518_with_user_pip(script, virtualenv, pip_src, data):
         fp.write('raise ImportError\n')
     to_install = data.src.join("pep518-3.0")
     for command in ('install', 'wheel'):
-        kwargs = {}
-        if sys.version_info[:2] == (3, 3):
-            # Ignore Python 3.3 deprecation warning...
-            kwargs['expect_stderr'] = True
         script.run(
             "python", "-c",
             "import pip._internal; pip._internal.main(["
             "%r, " "'-f', %r, " "%r, "
             "])" % (command, str(data.packages), str(to_install)),
-            **kwargs
         )
 
 
@@ -76,7 +66,7 @@ def test_pip_second_command_line_interface_works(script, data):
     # On old versions of Python, urllib3/requests will raise a warning about
     # the lack of an SSLContext.
     kwargs = {}
-    if pyversion_tuple < (2, 7, 9) or pyversion_tuple[:2] == (3, 3):
+    if pyversion_tuple < (2, 7, 9):
         kwargs['expect_stderr'] = True
 
     args = ['pip%s' % pyversion]

tests/lib/__init__.py

@@ -372,9 +372,6 @@ class PipTestEnvironment(scripttest.TestFileEnvironment):
         if (pyversion_tuple < (2, 7, 9) and
                 args and args[0] in ('search', 'install', 'download')):
             kwargs['expect_stderr'] = True
-        # Python 3.3 is deprecated and we emit a warning on it.
-        if pyversion_tuple[:2] == (3, 3):
-            kwargs['expect_stderr'] = True
         if kwargs.pop('use_module', False):
             exe = 'python'
             args = ('-m', 'pip') + args

tox.ini

 [tox]
 envlist =
     docs, packaging, lint-py2, lint-py3, mypy,
-    py27, py33, py34, py35, py36, py37, pypy
+    py27, py34, py35, py36, py37, pypy
 
 [testenv]
 passenv = CI GIT_SSL_CAINFO