Fix Python version number in cookiecutter --version and test on Python 3.10

.github/workflows/main.yml

@@ -37,14 +37,17 @@ jobs:
           - "ubuntu-py37"
           - "ubuntu-py38"
           - "ubuntu-py39"
+          - "ubuntu-py310"
 
           - "macos-py37"
           - "macos-py38"
           - "macos-py39"
+          - "macos-py310"
 
           - "windows-py37"
           - "windows-py38"
           - "windows-py39"
+          - "windows-py310"
 
         include:
           - name: "ubuntu-py37"
@@ -59,6 +62,10 @@ jobs:
             python: "3.9"
             os: ubuntu-latest
             tox_env: "py39"
+          - name: "ubuntu-py310"
+            python: "3.10"
+            os: ubuntu-latest
+            tox_env: "py310"
 
           - name: "macos-py37"
             python: "3.7"
@@ -72,6 +79,10 @@ jobs:
             python: "3.9"
             os: macos-latest
             tox_env: "py39"
+          - name: "macos-py310"
+            python: "3.10"
+            os: macos-latest
+            tox_env: "py310"
 
           - name: "windows-py37"
             python: "3.7"
@@ -85,6 +96,10 @@ jobs:
             python: "3.9"
             os: windows-latest
             tox_env: "py39"
+          - name: "windows-py310"
+            python: "3.10"
+            os: windows-latest
+            tox_env: "py310"
 
     steps:
       - uses: actions/checkout@v2

cookiecutter/cli.py

@@ -25,7 +25,7 @@
 
 def version_msg():
     """Return the Cookiecutter version, location and Python powering it."""
-    python_version = sys.version[:3]
+    python_version = f'{sys.version_info.major}.{sys.version_info.minor}'
     location = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
     message = 'Cookiecutter %(version)s from {} (Python {})'
     return message.format(location, python_version)

tests/test_cli.py

@@ -4,6 +4,9 @@
 import os
 import re
 
+import sys
+
+
 import pytest
 from click.testing import CliRunner
 
@@ -48,12 +51,24 @@ def version_cli_flag(request):
 
 
 def test_cli_version(cli_runner, version_cli_flag):
-    """Verify correct version output by `cookiecutter` on cli invocation."""
+    """Verify Cookiecutter version output by `cookiecutter` on cli invocation."""
     result = cli_runner(version_cli_flag)
     assert result.exit_code == 0
     assert result.output.startswith('Cookiecutter')
 
 
+def test_cli_version_python(cli_runner, version_cli_flag):
+    """Verify correct Python version output by `cookiecutter` on cli invocation."""
+    result = cli_runner(version_cli_flag)
+    python_major_number = sys.version_info.major
+    python_minor_number = sys.version_info.minor
+    version_output_string = result.output[:-1]
+    version_output_string = version_output_string[-5:-1]
+    if version_output_string[0] == ' ':
+        version_output_string = version_output_string[1:]
+    assert f'{python_major_number}.{python_minor_number}' == version_output_string
+
+
 @pytest.mark.usefixtures('make_fake_project_dir', 'remove_fake_project_dir')
 def test_cli_error_on_existing_output_directory(cli_runner):
     """Test cli invocation without `overwrite-if-exists` fail if dir exist."""

tox.ini

@@ -4,6 +4,7 @@ envlist =
     py37
     py38
     py39
+    py310
 minversion = 3.14.2
 requires =
     virtualenv >= 20.4.5