New submission from Frank Millman: Using copy.copy on a byte string returns a new copy instead of the original immutable object. Using copy.deepcopy returns the original, as expected. Testing with timeit, copy.copy is much slower than copy.deepcopy.
>>> import copy >>> >>> a = 'a'*1000 # string >>> copy.copy(a) is a True >>> copy.deepcopy(a) is a True >>> >>> b = b'b'*1000 # bytes >>> copy.copy(b) is b False >>> copy.deepcopy(b) is b True ---------- components: Library (Lib) messages: 212340 nosy: frankmillman priority: normal severity: normal status: open title: copy.copy(bytes) is slow type: performance versions: Python 3.3 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20791> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com