PYTHON-1974 Drop support for Python 3.4

Author: behackett

.evergreen/build-mac.sh

@@ -8,7 +8,7 @@ rm -rf validdist
 mkdir -p validdist
 mv dist/* validdist || true
 
-for VERSION in 3.4 3.5 3.6 3.7 3.8 3.9; do
+for VERSION in 3.5 3.6 3.7 3.8 3.9; do
  PYTHON=/Library/Frameworks/Python.framework/Versions/$VERSION/bin/python3
  rm -rf build
 

.evergreen/build-manylinux-internal.sh

@@ -11,7 +11,7 @@ mv dist/* validdist || true
 
 # Compile wheels
 for PYTHON in /opt/python/*/bin/python; do
- if [[ ! $PYTHON =~ (cp34|cp35|cp36|cp37|cp38|cp39) ]]; then
+ if [[ ! $PYTHON =~ (cp35|cp36|cp37|cp38|cp39) ]]; then
  continue
  fi
  # https://github.com/pypa/manylinux/issues/49

.evergreen/build-manylinux.sh

@@ -22,7 +22,6 @@ ls dist
 
 # Check for any unexpected files.
 unexpected=$(find dist \! \( -iname dist -or \
- -iname '*cp34*' -or \
  -iname '*cp35*' -or \
  -iname '*cp36*' -or \
  -iname '*cp37*' -or \

.evergreen/build-windows.sh

@@ -8,7 +8,7 @@ rm -rf validdist
 mkdir -p validdist
 mv dist/* validdist || true
 
-for VERSION in 34 35 36 37 38 39; do
+for VERSION in 35 36 37 38 39; do
  _pythons=(C:/Python/Python${VERSION}/python.exe \
  C:/Python/32/Python${VERSION}/python.exe)
  for PYTHON in "${_pythons[@]}"; do

.evergreen/config.yml

@@ -1582,10 +1582,6 @@ axes:
  display_name: "Archlinux"
  run_on: archlinux-test
  batchtime: 10080 # 7 days
- - id: debian81
- display_name: "Debian 8.1"
- run_on: debian81-test
- batchtime: 10080 # 7 days
  - id: debian92
  display_name: "Debian 9.2"
  run_on: debian92-test
@@ -1607,6 +1603,9 @@ axes:
  batchtime: 10080 # 7 days
  variables:
  libmongocrypt_url: https://s3.amazonaws.com/mciuploads/libmongocrypt/rhel-62-64-bit/master/latest/libmongocrypt.tar.gz
+ # Note that rhel70 isn't currently used since it doesn't
+ # have a system Python 3. We'll switch to rhel70 as our main test
+ # system (using /opt/python) in a future change.
  - id: rhel70
  display_name: "RHEL 7.0"
  run_on: rhel70-small
@@ -1623,12 +1622,6 @@ axes:
  batchtime: 10080 # 7 days
  variables:
  libmongocrypt_url: https://s3.amazonaws.com/mciuploads/libmongocrypt/rhel72-zseries-test/master/latest/libmongocrypt.tar.gz
- - id: suse12-x86-64-test
- display_name: "SUSE 12 (x86_64)"
- run_on: suse12-sp5-small
- batchtime: 10080 # 7 days
- variables:
- libmongocrypt_url: https://s3.amazonaws.com/mciuploads/libmongocrypt/suse12-64/master/latest/libmongocrypt.tar.gz
  - id: ubuntu-16.04
  display_name: "Ubuntu 16.04"
  run_on: ubuntu1604-test
@@ -1779,10 +1772,6 @@ axes:
  values:
  # Note: always display platform with python-version to avoid ambiguous display names.
  # Linux
- - id: "3.4"
- display_name: "Python 3.4"
- variables:
- PYTHON_BINARY: "/opt/python/3.4/bin/python3"
  - id: "3.5"
  display_name: "Python 3.5"
  batchtime: 10080 # 7 days
@@ -1820,10 +1809,6 @@ axes:
  - id: python-version-windows
  display_name: "Python"
  values:
- - id: "3.4"
- display_name: "Python 3.4"
- variables:
- PYTHON_BINARY: "C:/python/Python34/python.exe"
  - id: "3.5"
  display_name: "Python 3.5"
  variables:
@@ -1848,10 +1833,6 @@ axes:
  - id: python-version-windows-32
  display_name: "Python"
  values:
- - id: "3.4"
- display_name: "32-bit Python 3.4"
- variables:
- PYTHON_BINARY: "C:/python/32/Python34/python.exe"
  - id: "3.5"
  display_name: "32-bit Python 3.5"
  variables:
@@ -2047,7 +2028,6 @@ buildvariants:
  platform:
  # OSes that support versions of MongoDB>=3.2 with SSL.
  - ubuntu-16.04
- - suse12-x86-64-test
  - rhel71-power8-test
  auth-ssl: "*"
  display_name: "${platform} ${auth-ssl}"
@@ -2106,7 +2086,6 @@ buildvariants:
  matrix_spec:
  platform:
  # OSes that support versions of MongoDB>=3.4 <4.2 with SSL.
- - debian81
  - ubuntu1604-power8-test
  - ubuntu1604-arm64-small
  auth-ssl: "*"
@@ -2147,7 +2126,7 @@ buildvariants:
  matrix_spec:
  platform: rhel62
  # RHEL 6.2 does not support Python 3.7.x and later.
- python-version: &rhel62-pythons ["3.4", "3.5", "3.6", "pypy3.5", "pypy3.6"]
+ python-version: &rhel62-pythons ["3.5", "3.6", "pypy3.5", "pypy3.6"]
  auth: "*"
  ssl: "*"
  coverage: "*"
@@ -2163,14 +2142,14 @@ buildvariants:
 - matrix_name: "tests-pyopenssl"
  matrix_spec:
  platform: ubuntu-16.04
- python-version: ["3.4", "3.5", "3.6", "3.7", "3.8", "3.9"]
+ python-version: ["3.5", "3.6", "3.7", "3.8", "3.9"]
  auth: "*"
  ssl: "ssl"
  pyopenssl: "*"
  # Only test "noauth" with Python 3.7.
  exclude_spec:
  platform: ubuntu-16.04
- python-version: ["3.4", "3.5", "3.6", "3.8", "3.9"]
+ python-version: ["3.5", "3.6", "3.8", "3.9"]
  auth: "noauth"
  ssl: "ssl"
  pyopenssl: "*"
@@ -2218,7 +2197,7 @@ buildvariants:
  matrix_spec:
  platform: rhel62
  # RHEL 6.2 does not support Python 3.7.x and later.
- python-version: ["3.4", "3.5", "3.6"]
+ python-version: ["3.5", "3.6"]
  auth-ssl: noauth-nossl
 # TODO: dependency error for 'coverage-report' task:
 # dependency tests-python-version-rhel62-test-encryption_.../test-2.6-standalone is not present in the project config
@@ -2273,7 +2252,7 @@ buildvariants:
  matrix_spec:
  # Ubuntu 16.04 images have libsnappy-dev installed, and provides OpenSSL 1.0.2 for testing Python 3.7
  platform: ubuntu-16.04
- python-version: ["3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "pypy3.5", "pypy3.6"]
+ python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "pypy3.5", "pypy3.6"]
  c-extensions: "*"
  compression: "*"
  exclude_spec:
@@ -2450,7 +2429,13 @@ buildvariants:
 - matrix_name: "tests-mod-wsgi"
  matrix_spec:
  platform: rhel62
- python-version: ["3.4", "3.6"]
+ # The toolchain doesn't currently include mod-wsgi
+ # built for CPython 3.5 or 3.8, mod-wsgi doesn't yet
+ # claim to support 3.9. Python 3.7+ won't build on rhel6
+ # and we need to do some work to migrate mod-wsgi testing
+ # to a different OS. For now we're stuck just testing with
+ # Python 3.6.
+ python-version: ["3.6"]
  mod-wsgi-version: "*"
  display_name: "${mod-wsgi-version} ${python-version} ${platform}"
  tasks:
@@ -2468,7 +2453,7 @@ buildvariants:
 - matrix_name: "tests-doctests"
  matrix_spec:
  platform: rhel62
- python-version: ["3.4"]
+ python-version: ["3.5"]
  display_name: "Doctests ${python-version} ${platform}"
  tasks:
  - name: "doctests"
@@ -2510,7 +2495,7 @@ buildvariants:
 - matrix_name: "data-lake-spec-tests"
  matrix_spec:
  platform: ubuntu-16.04
- python-version: ["3.4", "3.8"]
+ python-version: ["3.5", "3.9"]
  auth: "auth"
  c-extensions: "*"
  display_name: "Atlas Data Lake ${python-version} ${c-extensions}"
@@ -2532,7 +2517,7 @@ buildvariants:
 - matrix_name: "ocsp-test"
  matrix_spec:
  platform: ubuntu-16.04
- python-version: ["3.4", "3.8", "3.9"]
+ python-version: ["3.5", "3.8", "3.9"]
  mongodb-version: ["4.4", "latest"]
  auth: "noauth"
  ssl: "ssl"
@@ -2556,7 +2541,7 @@ buildvariants:
 - matrix_name: "ocsp-test-windows"
  matrix_spec:
  platform: windows-64-vsMulti-small
- python-version-windows: ["3.4", "3.9"]
+ python-version-windows: ["3.5", "3.9"]
  mongodb-version: ["4.4", "latest"]
  auth: "noauth"
  ssl: "ssl"

.evergreen/test-encryption-requirements.txt

@@ -1,4 +1,2 @@
-# cffi==1.14.3 was the last installable release on RHEL 6.2 with Python 3.4
-cffi==1.14.3;python_version=="3.4"
-cffi>=1.12.0,<2;python_version!="3.4"
+cffi>=1.12.0,<2
 cryptography>=2,<4

.evergreen/utils.sh

@@ -25,10 +25,7 @@ createvirtualenv () {
  # Upgrade to the latest versions of pip setuptools wheel so that
  # pip can always download the latest cryptography+cffi wheels.
  PYTHON_VERSION=$(python -c 'import sys;print("%s.%s" % sys.version_info[:2])')
- if [[ $PYTHON_VERSION == "3.4" ]]; then
- # pip 19.2 dropped support for Python 3.4.
- python -m pip install --upgrade 'pip<19.2'
- elif [[ $PYTHON_VERSION == "3.5" ]]; then
+ if [[ $PYTHON_VERSION == "3.5" ]]; then
  # pip 21 will drop support for 3.5.
  python -m pip install --upgrade 'pip<21'
  else

.travis.yml

@@ -1,7 +1,6 @@
 language: python
 
 python:
- - 3.4
  - 3.5
  - 3.6
  - 3.7

CONTRIBUTING.rst

@@ -19,7 +19,7 @@ that might not be of interest or that has already been addressed.
 Supported Interpreters
 ----------------------
 
-PyMongo supports CPython 3.4+ and PyPy3.5+. Language
+PyMongo supports CPython 3.5+ and PyPy3.5+. Language
 features not supported by all interpreters can not be used.
 
 Style Guide

README.rst

@@ -89,7 +89,7 @@ is incompatible with PyMongo.
 Dependencies
 ============
 
-PyMongo supports CPython 3.4+ and PyPy3.5+.
+PyMongo supports CPython 3.5+ and PyPy3.5+.
 
 Optional dependencies: