Cast name and version to strings.

Author: jaraco

twine/package.py

@@ -88,7 +88,7 @@ def __init__(
         self.metadata = metadata
         self.python_version = python_version
         self.filetype = filetype
-        self.safe_name = _safe_name(metadata.name)
+        self.safe_name = _safe_name(cast(str, metadata.name))
         self.signed_filename = self.filename + ".asc"
         self.signed_basefilename = self.basefilename + ".asc"
         self.gpg_signature: Optional[Tuple[str, bytes]] = None

twine/repository.py

@@ -223,7 +223,7 @@ def package_is_uploaded(
                 releases = {}
             self._releases_json_data[safe_name] = releases
 
-        packages = releases.get(package.metadata.version, [])
+        packages = releases.get(cast(str, package.metadata.version), [])
 
         for uploaded_package in packages:
             if uploaded_package["filename"] == package.basefilename: