This patch changes the default behaviour of the builtin charmap
codec to not apply Latin-1 mappings for keys which are not found
in the mapping dictionaries, but instead treat them as undefined
mappings.
The patch was originally written by Martin v. Loewis with some
additional (cosmetic) changes and an updated test script
by Marc-Andre Lemburg.
The standard codecs were recreated from the most current files
available at the Unicode.org site using the Tools/scripts/gencodec.py
tool.
This patch closes the bugs #116285 and #119960.
diff --git a/Lib/encodings/cp737.py b/Lib/encodings/cp737.py
index e55b3dd..03665ae 100644
--- a/Lib/encodings/cp737.py
+++ b/Lib/encodings/cp737.py
@@ -1,9 +1,9 @@
-""" Python Character Mapping Codec generated from 'CP737.TXT'.
-
+""" Python Character Mapping Codec generated from 'CP737.TXT' with gencodec.py.
Written by Marc-Andre Lemburg (mal@lemburg.com).
(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
+(c) Copyright 2000 Guido van Rossum.
"""#"
@@ -35,8 +35,8 @@
### Decoding Map
-decoding_map = {
-
+decoding_map = codecs.make_identity_dict(range(256))
+decoding_map.update({
0x0080: 0x0391, # GREEK CAPITAL LETTER ALPHA
0x0081: 0x0392, # GREEK CAPITAL LETTER BETA
0x0082: 0x0393, # GREEK CAPITAL LETTER GAMMA
@@ -165,7 +165,7 @@
0x00fd: 0x00b2, # SUPERSCRIPT TWO
0x00fe: 0x25a0, # BLACK SQUARE
0x00ff: 0x00a0, # NO-BREAK SPACE
-}
+})
### Encoding Map