diff options
Diffstat (limited to 'Lib/difflib.py')
| -rw-r--r-- | Lib/difflib.py | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Lib/difflib.py b/Lib/difflib.py index a1c5ec0421..381721a251 100644 --- a/Lib/difflib.py +++ b/Lib/difflib.py @@ -320,20 +320,22 @@ class SequenceMatcher: self.bjunk = junk = set() isjunk = self.isjunk if isjunk: - for elt in list(b2j.keys()): # using list() since b2j is modified + for elt in b2j.keys(): if isjunk(elt): junk.add(elt) - del b2j[elt] + for elt in junk: # separate loop avoids separate list of keys + del b2j[elt] # Purge popular elements that are not junk self.bpopular = popular = set() n = len(b) if self.autojunk and n >= 200: ntest = n // 100 + 1 - for elt, idxs in list(b2j.items()): + for elt, idxs in b2j.items(): if len(idxs) > ntest: popular.add(elt) - del b2j[elt] + for elt in popular: # ditto; as fast for 1% deletion + del b2j[elt] def isbjunk(self, item): "Deprecated; use 'item in SequenceMatcher().bjunk'." |