PYTHON-2133 Drop install support for Python 2

Author: behackett

.evergreen/config.yml

@@ -349,16 +349,6 @@ functions:
           ${PREPARE_SHELL}
           PYTHON_BINARY=${PYTHON_BINARY} PROJECT_DIRECTORY=${PROJECT_DIRECTORY} sh ${PROJECT_DIRECTORY}/.evergreen/run-mockupdb-tests.sh
 
-  "run cdecimal tests":
-     - command: shell.exec
-       type: test
-       params:
-         working_dir: "src"
-         script: |
-           set -o xtrace
-           ${PREPARE_SHELL}
-           PYTHON_BINARY=${PYTHON_BINARY} sh ${PROJECT_DIRECTORY}/.evergreen/run-cdecimal-tests.sh
-
   "run doctests":
      - command: shell.exec
        type: test
@@ -1179,15 +1169,6 @@ tasks:
             TOPOLOGY: "replica_set"
         - func: "run mod_wsgi tests"
 
-    - name: "cdecimal"
-      tags: ["cdecimal"]
-      commands:
-        - func: "bootstrap mongo-orchestration"
-          vars:
-            VERSION: "latest"
-            TOPOLOGY: "server"
-        - func: "run cdecimal tests"
-
     - name: "no-server"
       tags: ["no-server"]
       commands:

.travis.yml

@@ -1,13 +1,11 @@
 language: python
 
 python:
-  - 2.7
   - 3.4
   - 3.5
   - 3.6
   - 3.7
   - 3.8
-  - pypy
   - pypy3.5
 
 services:

MANIFEST.in

@@ -1,7 +1,6 @@
 include README.rst
 include LICENSE
 include THIRD-PARTY-NOTICES
-include ez_setup.py
 recursive-include doc *.rst
 recursive-include doc *.py
 recursive-include doc *.conf

README.rst

@@ -89,7 +89,7 @@ is incompatible with PyMongo.
 Dependencies
 ============
 
-PyMongo supports CPython 2.7, 3.4+, PyPy, and PyPy3.5+.
+PyMongo supports CPython 3.4+ and PyPy3.5+.
 
 Optional dependencies:
 
@@ -119,9 +119,6 @@ PyMongo::
 
   $ python -m pip install pymongo[tls]
 
-.. note:: Users of Python versions older than 2.7.9 will also
-  receive the dependencies for OCSP when using the tls extra.
-
 OCSP (Online Certificate Status Protocol) requires `PyOpenSSL
 <https://pypi.org/project/pyOpenSSL/>`_, `requests
 <https://pypi.org/project/requests/>`_ and `service_identity
@@ -149,16 +146,6 @@ command::
 
   $ python -m pip install pymongo[gssapi,aws,ocsp,snappy,srv,tls,zstd,encryption]
 
-Other optional packages:
-
-- `backports.pbkdf2 <https://pypi.python.org/pypi/backports.pbkdf2/>`_,
-  improves authentication performance with SCRAM-SHA-1 and SCRAM-SHA-256.
-  It especially improves performance on Python versions older than 2.7.8.
-- `monotonic <https://pypi.python.org/pypi/monotonic>`_ adds support for
-  a monotonic clock, which improves reliability in environments
-  where clock adjustments are frequent. Not needed in Python 3.
-
-
 Additional dependencies are:
 
 - (to generate documentation) sphinx_

RELEASE.rst

@@ -33,10 +33,10 @@ Doing a Release
 
 1. PyMongo is tested on Evergreen. Ensure the latest commit are passing CI
    as expected: https://evergreen.mongodb.com/waterfall/mongo-python-driver.
-   To test locally, ``python setup.py test`` will build the C extensions and
-   test. ``python tools/clean.py`` will remove the extensions,
-   and then ``python setup.py --no_ext test`` will run the tests without
-   them. You can also run the doctests: ``python setup.py doc -t``.
+   To test locally, ``python3 setup.py test`` will build the C extensions and
+   test. ``python3 tools/clean.py`` will remove the extensions,
+   and then ``python3 setup.py --no_ext test`` will run the tests without
+   them. You can also run the doctests: ``python3 setup.py doc -t``.
 
 2. Check Jira to ensure all the tickets in this version have been completed.
 
@@ -63,17 +63,11 @@ Doing a Release
    the next steps let's assume we unpacked these files into the following paths::
 
      $ ls path/to/manylinux
-     pymongo-<version>-cp27-cp27m-manylinux1_i686.whl
-     ...
      pymongo-<version>-cp38-cp38-manylinux2014_x86_64.whl
-     $ ls path/to/mac/
-     pymongo-<version>-cp27-cp27m-macosx_10_14_intel.whl
      ...
-     pymongo-<version>-py2.7-macosx-10.14-intel.egg
      $ ls path/to/windows/
-     pymongo-<version>-cp27-cp27m-win32.whl
-     ...
      pymongo-<version>-cp38-cp38-win_amd64.whl
+     ...
 
 10. Build the source distribution::
 

cdecimal_test.py

@@ -7,32 +7,7 @@ Atlas to :class:`~pymongo.mongo_client.MongoClient`::
 
   client = pymongo.MongoClient(<Atlas connection string>)
 
-Connections to Atlas require TLS/SSL. For connections using TLS/SSL, PyMongo
-may require third party dependencies as determined by your version of Python.
-With PyMongo 3.3+, you can install PyMongo 3.3+ and any TLS/SSL-related
-dependencies using the following pip command::
-
-  $ python -m pip install pymongo[tls]
-
-Starting with PyMongo 3.11 this installs `PyOpenSSL
-<https://pypi.org/project/pyOpenSSL/>`_, `requests`_
-and `service_identity
-<https://pypi.org/project/service_identity/>`_
-for users of Python versions older than 2.7.9. PyOpenSSL supports SNI for these
-old Python versions, allowing applictions to connect to Altas free and shared
-tier instances.
-
-Earlier versions of PyMongo require you to manually install the dependencies.
-For a list of TLS/SSL-related dependencies, see :doc:`examples/tls`.
-
-.. note:: Connecting to Atlas "Free Tier" or "Shared Cluster" instances
-  requires Server Name Indication (SNI) support. SNI support requires CPython
-  2.7.9 / PyPy 2.5.1 or newer or PyMongo 3.11+ with PyOpenSSL.
-  To check if your version of Python supports SNI run the following command::
-
-    $ python -c "import ssl; print(getattr(ssl, 'HAS_SNI', False))"
-
-  You should see "True".
+Connections to Atlas require TLS/SSL.
 
 .. warning:: Industry best practices recommend, and some regulations require,
   the use of TLS 1.1 or newer. Though no application changes are required for

doc/atlas.rst

@@ -18,9 +18,9 @@ effort to release at least one minor version that *deprecates* it. We add
 `DeprecationWarning`_. You can ensure your code is future-proof by running
 your code with the latest PyMongo release and looking for DeprecationWarnings.
 
-Starting with Python 2.7, the interpreter silences DeprecationWarnings by
-default. For example, the following code uses the deprecated ``insert``
-method but does not raise any warning:
+The interpreter silences DeprecationWarnings by default. For example, the
+following code uses the deprecated ``insert`` method but does not raise any
+warning:
 
 .. code-block:: python
 
@@ -32,13 +32,13 @@ method but does not raise any warning:
 
 To print deprecation warnings to stderr, run python with "-Wd"::
 
-  $ python -Wd insert.py
+  $ python3 -Wd insert.py
   insert.py:4: DeprecationWarning: insert is deprecated. Use insert_one or insert_many instead.
     client.test.test.insert({})
 
 You can turn warnings into exceptions with "python -We"::
 
-  $ python -We insert.py
+  $ python3 -We insert.py
   Traceback (most recent call last):
     File "insert.py", line 4, in <module>
       client.test.test.insert({})
@@ -55,8 +55,8 @@ deprecated PyMongo features.
 .. _semantic versioning: http://semver.org/
 
 .. _DeprecationWarning:
-  https://docs.python.org/2/library/exceptions.html#exceptions.DeprecationWarning
+  https://docs.python.org/3/library/exceptions.html#DeprecationWarning
 
-.. _the warnings module: https://docs.python.org/2/library/warnings.html
+.. _the warnings module: https://docs.python.org/3/library/warnings.html
 
-.. _the -W command line option: https://docs.python.org/2/using/cmdline.html#cmdoption-W
+.. _the -W command line option: https://docs.python.org/3/using/cmdline.html#cmdoption-w