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stbi/Lib/site-packages/pip/_internal/utils/pkg_resources.py

+from pip._vendor.pkg_resources import yield_lines
+from pip._vendor.six import ensure_str
+
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Dict, Iterable, List
+
+
+class DictMetadata(object):
+    """IMetadataProvider that reads metadata files from a dictionary.
+    """
+    def __init__(self, metadata):
+        # type: (Dict[str, bytes]) -> None
+        self._metadata = metadata
+
+    def has_metadata(self, name):
+        # type: (str) -> bool
+        return name in self._metadata
+
+    def get_metadata(self, name):
+        # type: (str) -> str
+        try:
+            return ensure_str(self._metadata[name])
+        except UnicodeDecodeError as e:
+            # Mirrors handling done in pkg_resources.NullProvider.
+            e.reason += " in {} file".format(name)
+            raise
+
+    def get_metadata_lines(self, name):
+        # type: (str) -> Iterable[str]
+        return yield_lines(self.get_metadata(name))
+
+    def metadata_isdir(self, name):
+        # type: (str) -> bool
+        return False
+
+    def metadata_listdir(self, name):
+        # type: (str) -> List[str]
+        return []
+
+    def run_script(self, script_name, namespace):
+        # type: (str, str) -> None
+        pass