[issue17711] Persistent id in pickle with protocol version 0
Serhiy Storchaka
report at bugs.python.org
Sun Apr 14 10:33:29 CEST 2013
Serhiy Storchaka added the comment:
I think a string with character codes < 256 will be better for test_protocol0_is_ascii_only(). It can be latin1 encoded (Python 2 allows any 8-bit strings).
PyUnicode_AsASCIIString() can be slower than _PyUnicode_AsStringAndSize() (actually PyUnicode_AsUTF8AndSize()) because the latter can use cached value. You can check if the persistent id only contains ASCII characters by checking PyUnicode_GET_LENGTH(pid_str) == size.
And what are you going to do with the fact that in Python 2 you can pickle non-ascii persistent ids, which will not be able to unpickle in Python 3?
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