[issue24159] Misleading TypeError when pickling bytes to a file opened as text

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[issue24159] Misleading TypeError when pickling bytes to a file opened as text

Борис Верховский added the comment: As I said in issue38226, the error message you get when you try to pickle.load() a file opened in "r" mode instead of "rb" mode, UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 0: invalid start byte is also confusing and can be

[issue24159] Misleading TypeError when pickling bytes to a file opened as text

Change by Serhiy Storchaka : -- versions: +Python 3.8 -Python 3.7 ___ Python tracker ___

[issue24159] Misleading TypeError when pickling bytes to a file opened as text

Serhiy Storchaka added the comment: I think it is worth to improve the error message in the write() method of binary files. >>> sys.stdout.write(b'') Traceback (most recent call last): File "", line 1, in TypeError: write() argument must be str, not bytes >>> sys.stdout.buffer.write('')

[issue24159] Misleading TypeError when pickling bytes to a file opened as text

Changes by Ned Deily n...@acm.org: -- nosy: +alexandre.vassalotti, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue24159 ___ ___

[issue24159] Misleading TypeError when pickling bytes to a file opened as text

Changes by Jon Clements jon...@googlemail.com: -- nosy: +joncle ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue24159 ___ ___ Python-bugs-list

[issue24159] Misleading TypeError when pickling bytes to a file opened as text

New submission from Jason R. Coombs: I had a piece of code which I distilled to this: import pickle with open('out.pickle', 'w') as out: pickle.dump(out, b'data') Running that code raises this error: TypeError: must be str, not bytes The error is raised at the dump call with no