pythongh-128703: Fix mimetypes.guess_type for empty Content-Type in r…

…egistry (pythonGH-128854) (cherry picked from commit 303043f) Co-authored-by: RUANG (James Roy) <longjinyii@outlook.com>
miss-islington · Feb 14, 2025 · 5cacca9 · 5cacca9
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diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
@@ -95,6 +95,8 @@ def add_type(self, type, ext, strict=True):
         list of standard types, else to the list of non-standard
         types.
         """
+        if not type:
+            return
         self.types_map[strict][ext] = type
         exts = self.types_map_inv[strict].setdefault(type, [])
         if ext not in exts:

diff --git a/Misc/NEWS.d/next/Library/2025-01-15-12-04-30.gh-issue-128703.6WPf38.rst b/Misc/NEWS.d/next/Library/2025-01-15-12-04-30.gh-issue-128703.6WPf38.rst
@@ -0,0 +1,2 @@
+Fix :func:`mimetypes.guess_type` to use default mapping for empty
+``Content-Type`` in registry.
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		Fix :func:`mimetypes.guess_type` to use default mapping for empty
		``Content-Type`` in registry.