Drop support for running with Python 3.7

.github/workflows/docs.yml

@@ -25,7 +25,7 @@ jobs:
  - uses: actions/checkout@v3
  - uses: actions/setup-python@v4
  with:
- python-version: '3.7'
+ python-version: '3.8'
  - name: Install tox
  run: pip install --upgrade 'setuptools!=50' tox==4.4.4
  - name: Setup tox environment

.github/workflows/test.yml

@@ -26,37 +26,27 @@ jobs:
  fail-fast: false
  matrix:
  include:
- - name: Test suite with py37-windows-64
- python: '3.7'
- arch: x64
- os: windows-latest
- toxenv: py37
- - name: Test suite with py38-ubuntu
+ # Make sure to run mypyc compiled unit tests for both
+ # the oldest and newest supported Python versions
+ - name: Test suite with py38-ubuntu, mypyc-compiled
  python: '3.8'
  arch: x64
  os: ubuntu-latest
  toxenv: py
  tox_extra_args: "-n 2"
- - name: Test suite with py39-ubuntu
- python: '3.9'
- arch: x64
- os: ubuntu-latest
- toxenv: py
- tox_extra_args: "-n 2"
- - name: Test suite with py37-ubuntu, mypyc-compiled
- python: '3.7'
+ test_mypyc: true
+ - name: Test suite with py38-windows-64
+ python: '3.8'
  arch: x64
- os: ubuntu-latest
- toxenv: py
+ os: windows-latest
+ toxenv: py38
  tox_extra_args: "-n 2"
- test_mypyc: true
- - name: Test suite with py310-ubuntu, mypyc-compiled
- python: '3.10'
+ - name: Test suite with py39-ubuntu
+ python: '3.9'
  arch: x64
  os: ubuntu-latest
  toxenv: py
  tox_extra_args: "-n 2"
- test_mypyc: true
  - name: Test suite with py310-ubuntu
  python: '3.10'
  arch: x64
@@ -70,29 +60,32 @@ jobs:
  toxenv: py
  tox_extra_args: "-n 2"
  test_mypyc: true
- - name: mypyc runtime tests with py37-macos
- python: '3.7'
+
+ - name: mypyc runtime tests with py38-macos
+ python: '3.8.17'
  arch: x64
  os: macos-latest
  toxenv: py
  tox_extra_args: "-n 2 mypyc/test/test_run.py mypyc/test/test_external.py"
- - name: mypyc runtime tests with py37-debug-build-ubuntu
- python: '3.7.13'
+ - name: mypyc runtime tests with py38-debug-build-ubuntu
+ python: '3.8.17'
  arch: x64
  os: ubuntu-latest
  toxenv: py
  tox_extra_args: "-n 2 mypyc/test/test_run.py mypyc/test/test_external.py"
  debug_build: true
- - name: Type check our own code (py37-ubuntu)
- python: '3.7'
+
+ - name: Type check our own code (py38-ubuntu)
+ python: '3.8'
  arch: x64
  os: ubuntu-latest
  toxenv: type
- - name: Type check our own code (py37-windows-64)
- python: '3.7'
+ - name: Type check our own code (py38-windows-64)
+ python: '3.8'
  arch: x64
  os: windows-latest
  toxenv: type
+
  # We also run these checks with pre-commit in CI,
  # but it's useful to run them with tox too,
  # to ensure the tox env works as expected

build-requirements.txt

@@ -2,4 +2,3 @@
 -r mypy-requirements.txt
 types-psutil
 types-setuptools
-types-typed-ast>=1.5.8.5,<1.6.0

docs/source/additional_features.rst

@@ -9,10 +9,9 @@ of the previous sections.
 Dataclasses
 ***********
 
-In Python 3.7, a new :py:mod:`dataclasses` module has been added to the standard library.
-This module allows defining and customizing simple boilerplate-free classes.
-They can be defined using the :py:func:`@dataclasses.dataclass
-<python:dataclasses.dataclass>` decorator:
+The :py:mod:`dataclasses` module allows defining and customizing simple
+boilerplate-free classes. They can be defined using the
+:py:func:`@dataclasses.dataclass <python:dataclasses.dataclass>` decorator:
 
 .. code-block:: python
 

docs/source/getting_started.rst

@@ -16,7 +16,7 @@ may not make much sense otherwise.
 Installing and running mypy
 ***************************
 
-Mypy requires Python 3.7 or later to run. You can install mypy using pip:
+Mypy requires Python 3.8 or later to run. You can install mypy using pip:
 
 .. code-block:: shell
 

misc/build-debug-python.sh

@@ -26,7 +26,7 @@ fi
 curl -O https://www.python.org/ftp/python/$VERSION/Python-$VERSION.tgz
 tar zxf Python-$VERSION.tgz
 cd Python-$VERSION
-CPPFLAGS="$CPPFLAGS" LDFLAGS="$LDFLAGS" ./configure CFLAGS="-DPy_DEBUG -DPy_TRACE_REFS -DPYMALLOC_DEBUG" --with-pydebug --prefix=$PREFIX
+CPPFLAGS="$CPPFLAGS" LDFLAGS="$LDFLAGS" ./configure CFLAGS="-DPy_DEBUG -DPy_TRACE_REFS -DPYMALLOC_DEBUG" --with-pydebug --prefix=$PREFIX --with-trace-refs
 make -j4
 make install
 $PREFIX/bin/python3 -m pip install virtualenv

mypy-requirements.txt

@@ -1,6 +1,4 @@
 # NOTE: this needs to be kept in sync with the "requires" list in pyproject.toml
-typing_extensions>=4.1.0; python_version >= '3.8'
-typing_extensions>=4.7.0; python_version < '3.8'
+typing_extensions>=4.1.0
 mypy_extensions>=1.0.0
-typed_ast>=1.4.0,<2; python_version<'3.8'
 tomli>=1.1.0; python_version<'3.11'

mypy/defaults.py

@@ -8,7 +8,7 @@
 # Earliest fully supported Python 3.x version. Used as the default Python
 # version in tests. Mypy wheels should be built starting with this version,
 # and CI tests should be run on this version (and later versions).
-PYTHON3_VERSION: Final = (3, 7)
+PYTHON3_VERSION: Final = (3, 8)
 
 # Earliest Python 3.x version supported via --python-version 3.x. To run
 # mypy, at least version PYTHON3_VERSION is needed.

mypy/dmypy_server.py

@@ -896,8 +896,6 @@ def cmd_inspect(
  force_reload: bool = False,
  ) -> dict[str, object]:
  """Locate and inspect expression(s)."""
- if sys.version_info < (3, 8):
- return {"error": 'Python 3.8 required for "inspect" command'}
  if not self.fine_grained_manager:
  return {
  "error": 'Command "inspect" is only valid after a "check" command'