Use importlib instead of the deprecated pkg_resources

{{cookiecutter.project_slug}}/doc/conf.py

@@ -17,11 +17,14 @@ import sys
 import os
 from datetime import date
 import sphinx_rtd_theme
-from pkg_resources import get_distribution
+try:
+    from importlib.metadata import version as get_version
+    version = get_version('{{cookiecutter.project_slug}}')
+except ImportError:
+    from pkg_resources import get_distribution
+    version = get_distribution('{{cookiecutter.project_slug}}').version
 
 # -- Project information -----------------------------------------------------
-
-version = get_distribution('{{cookiecutter.project_slug}}').version
 short_version = '.'.join(version.split('.')[:2])
 project = '{{cookiecutter.project_slug}} {}'.format(short_version)
 copyright = '{0}, {{cookiecutter.author}}'.format(date.today().year)

{{cookiecutter.project_slug}}/src/{{cookiecutter.project_slug}}/__init__.py

-from pkg_resources import get_distribution, DistributionNotFound
-
-version = get_distribution(__name__).version
+try:
+    from importlib.metadata import version as get_version
+    version = get_version(__name__)
+except ImportError:
+    from pkg_resources import get_distribution
+    version = get_distribution(__name__).version
 
 from .calc import Calculator