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list comprehension is faster than the function call overhead of list()

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Eli Schwartz 2019-09-09 17:44:04 -04:00
parent 9320e2fe22
commit 1c5ea10a34
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1 changed files with 3 additions and 3 deletions
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src/calibre/library/database2.py
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@ -3526,9 +3526,9 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
for book_id, fmt in postimport: for book_id, fmt in postimport:
run_plugins_on_postimport(self, book_id, fmt) run_plugins_on_postimport(self, book_id, fmt)
if duplicates: if duplicates:
paths = list(duplicate[0] for duplicate in duplicates) paths = [duplicate[0] for duplicate in duplicates]
formats = list(duplicate[1] for duplicate in duplicates) formats = [duplicate[1] for duplicate in duplicates]
metadata = list(duplicate[2] for duplicate in duplicates) metadata = [duplicate[2] for duplicate in duplicates]
return (paths, formats, metadata), (ids if return_ids else return (paths, formats, metadata), (ids if return_ids else
len(ids)) len(ids))
return None, (ids if return_ids else len(ids)) return None, (ids if return_ids else len(ids))