using capitalize method right in formatting method in python

Asked Feb 06 '21 at 10:42

Active Feb 06 '21 at 10:46

Viewed 48 times

string_ = "hello world"
print("{0[1].capitalize()} {0[0].capitalize()}".format(string_.split(" ")))

with running this I get

AttributeError: 'str' object has no attribute 'capitalize()'

please tell me what's wrong because string method has capitalize method in it!

dir(string_)
Out[108]: 
[...
 'capitalize',
 ...]

asked Feb 06 '21 at 10:42

WorldLover

What are you trying to achieve? – Tom S Feb 06 '21 at 10:46
You can only do that in f-strings; not in vanilla str.format. – jonrsharpe Feb 06 '21 at 10:57
@DeepSpace I think the format method isn't using the full parser, just splitting on dots. – jonrsharpe Feb 06 '21 at 11:01
@jonrsharpe Yeah, it might also use `getattr` but accidentally pass in the `()`, which is weird. For example, `getattr('a', 'capitalize()')` will of course generate the same error. It's a shame – DeepSpace Feb 06 '21 at 11:03

0 Answers0