diff --git a/Lib/difflib.py b/Lib/difflib.py index c124afdd039559..f4b453fe77f81b 100644 --- a/Lib/difflib.py +++ b/Lib/difflib.py @@ -1038,11 +1038,9 @@ def _qformat(self, aline, bline, atags, btags): # remaining is that perhaps it was really the case that " volatile" # was inserted after "private". I can live with that . -import re - -def IS_LINE_JUNK(line, pat=re.compile(r"\s*(?:#\s*)?$").match): +def IS_LINE_JUNK(line, pat=None): r""" - Return True for ignorable line: iff `line` is blank or contains a single '#'. + Return True for ignorable line: if `line` is blank or contains a single '#'. Examples: @@ -1054,6 +1052,11 @@ def IS_LINE_JUNK(line, pat=re.compile(r"\s*(?:#\s*)?$").match): False """ + if pat is None: + # Default: match '#' or the empty string + return line.strip() in '#' + # Previous versions used the undocumented parameter 'pat' as a + # match function. Retain this behaviour for compatibility. return pat(line) is not None def IS_CHARACTER_JUNK(ch, ws=" \t"): @@ -2027,7 +2030,6 @@ def make_table(self,fromlines,tolines,fromdesc='',todesc='',context=False, replace('\1',''). \ replace('\t',' ') -del re def restore(delta, which): r""" diff --git a/Misc/NEWS.d/next/Library/2025-02-16-06-25-01.gh-issue-130167.kUg7Rc.rst b/Misc/NEWS.d/next/Library/2025-02-16-06-25-01.gh-issue-130167.kUg7Rc.rst new file mode 100644 index 00000000000000..3d397084fc136c --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-02-16-06-25-01.gh-issue-130167.kUg7Rc.rst @@ -0,0 +1 @@ +Improve speed of :func:`difflib.IS_LINE_JUNK`. Patch by Semyon Moroz. pFad - Phonifier reborn

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