https://github.com/python/cpython/commit/32c4bbe834aeb077dd12414b65b123cf7fb5b117
commit: 32c4bbe834aeb077dd12414b65b123cf7fb5b117
branch: main
author: Pablo Galindo Salgado <[email protected]>
committer: pablogsal <[email protected]>
date: 2025-04-23T14:45:18+01:00
summary:
gh-132449: Improve the algorithm to detect typos in keywords (#132837)
files:
M Lib/test/test_syntax.py
M Lib/traceback.py
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index f3abb11952dbe0..8cae62459bb675 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -1838,6 +1838,12 @@
Traceback (most recent call last):
SyntaxError: invalid syntax. Did you mean 'for'?
+
+>>> for x im n:
+... pass
+Traceback (most recent call last):
+SyntaxError: invalid syntax. Did you mean 'in'?
+
>>> f(a=23, a=234)
Traceback (most recent call last):
...
diff --git a/Lib/traceback.py b/Lib/traceback.py
index 5bff101a72ca47..4b3d2b636fc6b5 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -1339,10 +1339,14 @@ def _find_keyword_typos(self):
if tokens_left_to_process < 0:
break
# Limit the number of possible matches to try
- matches = difflib.get_close_matches(wrong_name, keyword.kwlist,
n=3)
- if not matches and _suggestions is not None:
+ max_matches = 3
+ matches = []
+ if _suggestions is not None:
suggestion =
_suggestions._generate_suggestions(keyword.kwlist, wrong_name)
- matches = [suggestion] if suggestion is not None else matches
+ if suggestion:
+ matches.append(suggestion)
+ matches.extend(difflib.get_close_matches(wrong_name,
keyword.kwlist, n=max_matches, cutoff=0.5))
+ matches = matches[:max_matches]
for suggestion in matches:
if not suggestion or suggestion == wrong_name:
continue
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