Message264647
This is an annoying heisenbug; it seems that some objects cannot be formatted until you explicitly do obj.__format__. For example `object.__reduce__` behaves like this:
Python 2.7.10 (default, Oct 14 2015, 16:09:02)
[GCC 5.2.1 20151010] on linux2
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>>> format(object.__reduce__)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: Type method_descriptor doesn't define __format__
>>> format(object.__reduce__)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: Type method_descriptor doesn't define __format__
>>> object.__reduce__.__format__
<built-in method __format__ of method_descriptor object at 0x7f67563ed0e0>
>>> format(object.__reduce__)
"<method '__reduce__' of 'object' objects>"
I can replicate this in 2.7.9, .10 and .11 on Ubuntu and Debian, though it works on Windows Python, works in 2.6.6, and Pythons 3 wherever I've tried, but I've heard this also failing on Python 3. |
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Date |
User |
Action |
Args |
2016-05-02 13:07:24 | ztane | set | recipients:
+ ztane |
2016-05-02 13:07:24 | ztane | set | messageid: <1462194444.45.0.679859267338.issue26906@psf.upfronthosting.co.za> |
2016-05-02 13:07:24 | ztane | link | issue26906 messages |
2016-05-02 13:07:23 | ztane | create | |
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