util: Fix ashex for Python3
s = b'\x03\xc4\x85v\x00\x00\x00\x00' def ashex(s): > return s.encode('hex') E AttributeError: 'bytes' object has no attribute 'encode' zodbtools/util.py:29: AttributeError s.encode('hex') used to work on Py2 but fails on Py3: In [1]: s = "abc" In [2]: b = b"def" In [3]: s.encode('hex') --------------------------------------------------------------------------- LookupError Traceback (most recent call last) <ipython-input-3-75ae843597fe> in <module>() ----> 1 s.encode('hex') LookupError: 'hex' is not a text encoding; use codecs.encode() to handle arbitrary codecs In [4]: b.encode('hex') --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-4-ec2fccff20bc> in <module>() ----> 1 b.encode('hex') AttributeError: 'bytes' object has no attribute 'encode' In [5]: import codecs In [6]: codecs.encode(b, 'hex') Out[6]: b'646566' In [7]: codecs.encode(s, 'hex') --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /usr/lib/python3.7/encodings/hex_codec.py in hex_encode(input, errors) 14 assert errors == 'strict' ---> 15 return (binascii.b2a_hex(input), len(input)) 16 TypeError: a bytes-like object is required, not 'str' The above exception was the direct cause of the following exception: TypeError Traceback (most recent call last) <ipython-input-7-7fcb16cead4f> in <module>() ----> 1 codecs.encode(s, 'hex') TypeError: encoding with 'hex' codec failed (TypeError: a bytes-like object is required, not 'str') After the patch it works with bytes and raises for str. Fromhex does not need to be changed - it already uses codecs.decode way as originally added in dd959b28 (zodbdump += DumpReader - to read/parse zodbdump stream). Based on patch by Jérome Perrin.
Showing
Please register or sign in to comment