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stbi/Lib/site-packages/pip/_internal/distributions/wheel.py

+from zipfile import ZipFile
+
+from pip._internal.distributions.base import AbstractDistribution
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.wheel import pkg_resources_distribution_for_wheel
+
+if MYPY_CHECK_RUNNING:
+    from pip._vendor.pkg_resources import Distribution
+    from pip._internal.index.package_finder import PackageFinder
+
+
+class WheelDistribution(AbstractDistribution):
+    """Represents a wheel distribution.
+
+    This does not need any preparation as wheels can be directly unpacked.
+    """
+
+    def get_pkg_resources_distribution(self):
+        # type: () -> Distribution
+        """Loads the metadata from the wheel file into memory and returns a
+        Distribution that uses it, not relying on the wheel file or
+        requirement.
+        """
+        # Set as part of preparation during download.
+        assert self.req.local_file_path
+        # Wheels are never unnamed.
+        assert self.req.name
+
+        with ZipFile(self.req.local_file_path, allowZip64=True) as z:
+            return pkg_resources_distribution_for_wheel(
+                z, self.req.name, self.req.local_file_path
+            )
+
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        # type: (PackageFinder, bool) -> None
+        pass