uppercase letter in string?

[7raTEYdCql]

How do i check if a string has a uppercase letter in Python??

I searched on the internet but only found stuff that converts Uppercase letters to lower etc??

[geirha]

>>> help(str.isupper)

[7raTEYdCql]

I have to return the index of the uppercase alphabet.

[7raTEYdCql]

isupper checks if all the charachters are upper.

I want to return the index of the character that is upper, not necessary all the characters are upper.

[simeon87]

isupper checks if all the charachters are upper.

I want to return the index of the character that is upper, not necessary all the characters are upper.



>>> str.isupper("aaA"[2])
True

[geirha]

Then you iterate the string and check character for character.


>>> s= "helLo"
>>> for i,c in enumerate(s):
... if c.isupper():
... print i
... break
...
3
>>>

[7raTEYdCql]

How useful is the function enumerate. I mean it can be used in which kind of situations?

[simeon87]

How useful is the function enumerate. I mean it can be used in which kind of situations?

Use the documentation? http://docs.python.org/library/functions.html

[Can+~]

How useful is the function enumerate. I mean it can be used in which kind of situations?

The usual python for loop iterates over the elements of a given iterable sequence.


for x in ("hello", 5, "world", (9, 3.14)):
print x


hello
5
world
(9, 3.1400000000000001)

This is usually the only thing you need to do with a sequence, to work with the values it contain, but other times you'll need to also know what is the index in said sequence, that's when enumerate is useful.

Btw, why do you want to know what's the index of the first uppercase character?

[ghostdog74]

>>> import re
>>> print re.search("[A-Z]","aAbxx").end()
2
>>> print re.search("[A-Z]","aabXx").end()
4
>>> print re.search("[A-Z]","aabcX").end()
5
>>> print re.search("[A-Z]","aabcxdTd").end()
7

[Sprut1]

You can also write an listcomp:



a = "hello World"
result = [i for i,c in enumerate(a) if c.isupper()]
print result
>>> [6]


I'd say this is the python way of doing it.

[ghostdog74]

>>> a = "hello World"
>>> map(str.isupper,a).index(True)
6
>>>