mickey695 added the comment:
Well, it has been more than the 2 weeks I promised however now I finally have
time to look into this.
I did some fuzzing to build a list quickly and the following ASCII characters
can not be used as part of the argument name:
exclamation mark(!)
period(.)
colon(:)
mickey695 added the comment:
I think it should be documented properly.
In roughly two weeks I will have some time to look into it.
So I could probably document the current behaviour by the start of
December(unless someone beats me to it)
--
___
Py
Eric V. Smith added the comment:
Guido's suggestion in
https://mail.python.org/pipermail/python-dev/2017-October/150055.html is to not
change anything.
Assuming we do that, it's still an open issue as to if/how we should document
and test the current behavior. I'd be surprised if it's tested
Serhiy Storchaka added the comment:
I have wrote a patch that change the parser to only accept valid identifiers.
But now I have the same doubts and want first to discuss this [1]. This change
can break the existing code as Eric's example shows.
[1] https://mail.python.org/pipermail/python-de
Eric V. Smith added the comment:
How would you distinguish this from the case where an actually missing
attribute was given?
>>> "{0.ctimex}".format(d)
Traceback (most recent call last):
File "", line 1, in
AttributeError: 'datetime.datetime' object has no attribute 'ctimex'
I guess it wou
New submission from mickey695 :
PEP 3101 states that format strings may only use the "."(getattr) or the "[]"
(getitem) operators to address either attributes or items of parameters.
Should a programmer attempt to, for example, call a function of a parameter as
follows:
>>> d = datetime.datet
