sys.version fixes for python 3.10

src/pip/_internal/locations.py

@@ -127,7 +127,7 @@ def distutils_scheme(dist_name, user=False, home=None, root=None,
             sys.prefix,
             'include',
             'site',
-            'python' + sys.version[:3],
+            'python{}.{}'.format(*sys.version_info),
             dist_name,
         )
 

src/pip/_internal/utils/misc.py

@@ -118,7 +118,7 @@ def get_pip_version():
 
     return (
         'pip {} from {} (python {})'.format(
-            __version__, pip_pkg_dir, sys.version[:3],
+            __version__, pip_pkg_dir, '{}.{}'.format(*sys.version_info),
         )
     )
 

src/pip/_internal/wheel.py

@@ -557,10 +557,10 @@ if __name__ == '__main__':
             generated.extend(maker.make(spec))
 
         if os.environ.get("ENSUREPIP_OPTIONS", "") != "altinstall":
-            spec = 'pip%s = %s' % (sys.version[:1], pip_script)
+            spec = 'pip%s = %s' % (sys.version_info[0], pip_script)
             generated.extend(maker.make(spec))
 
-        spec = 'pip%s = %s' % (sys.version[:3], pip_script)
+        spec = 'pip%s = %s' % ('{}.{}'.format(*sys.version_info), pip_script)
         generated.extend(maker.make(spec))
         # Delete any other versioned pip entry points
         pip_ep = [k for k in console if re.match(r'pip(\d(\.\d)?)?$', k)]
@@ -572,7 +572,9 @@ if __name__ == '__main__':
             spec = 'easy_install = ' + easy_install_script
             generated.extend(maker.make(spec))
 
-        spec = 'easy_install-%s = %s' % (sys.version[:3], easy_install_script)
+        spec = 'easy_install-%s = %s' % (
+            '{}.{}'.format(*sys.version_info), easy_install_script,
+        )
         generated.extend(maker.make(spec))
         # Delete any other versioned easy_install entry points
         easy_install_ep = [

tests/lib/__init__.py

@@ -29,7 +29,7 @@ if MYPY_CHECK_RUNNING:
 DATA_DIR = Path(__file__).parent.parent.joinpath("data").abspath
 SRC_DIR = Path(__file__).abspath.parent.parent.parent
 
-pyversion = sys.version[:3]
+pyversion = '{}.{}'.format(*sys.version_info)
 pyversion_tuple = sys.version_info
 
 CURRENT_PY_VERSION_INFO = sys.version_info[:3]

tests/unit/test_target_python.py

@@ -36,9 +36,7 @@ class TestTargetPython:
         """
         Test passing py_version_info=None.
         """
-        # Get the index of the second dot.
-        index = sys.version.find('.', 2)
-        current_major_minor = sys.version[:index]  # e.g. "3.6"
+        current_major_minor = '{}.{}'.format(*sys.version_info)
 
         target_python = TargetPython(py_version_info=None)