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

[Serhiy Storchaka]

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 "<stdin>", line 1, in <module>
TypeError: write() argument must be str, not bytes
>>> sys.stdout.buffer.write('')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: a bytes-like object is required, not 'str'
>>> sys.stdout.buffer.raw.write('')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: a bytes-like object is required, not 'str'

But this is large issue. Other file-like objects (GzipFile, ZipExtFile etc) should be updated too.

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nosy: +serhiy.storchaka
type: behavior -> enhancement
versions: +Python 3.7 -Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24159>
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