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gh-132449: Improve the algorithm to detect typos in keywords (#132837)

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Pablo Galindo Salgado 2025-04-23 14:45:18 +01:00 • committed by GitHub
parent 85f89cb3e6
commit 32c4bbe834
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2 changed files with 13 additions and 3 deletions
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6
Lib/test/test_syntax.py
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@ -1838,6 +1838,12 @@ SyntaxError: invalid syntax. Did you mean 'if'?
Traceback (most recent call last): Traceback (most recent call last):
SyntaxError: invalid syntax. Did you mean 'for'? 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) >>> f(a=23, a=234)
Traceback (most recent call last): Traceback (most recent call last):
... ...

10
Lib/traceback.py
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@ -1339,10 +1339,14 @@ class TracebackException:
if tokens_left_to_process < 0: if tokens_left_to_process < 0:
break break
# Limit the number of possible matches to try # Limit the number of possible matches to try
matches = difflib.get_close_matches(wrong_name, keyword.kwlist, n=3) max_matches = 3
if not matches and _suggestions is not None: matches = []
if _suggestions is not None:
suggestion = _suggestions._generate_suggestions(keyword.kwlist, wrong_name) 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: for suggestion in matches:
if not suggestion or suggestion == wrong_name: if not suggestion or suggestion == wrong_name:
continue continue