Getting indices of capital letters with regex

Question

I am trying to get the indices of capital letters (including special ones) in a line. I found here the following solution:

[i for i, c in enumerate(s) if c.isupper()]

However, this does not work for letters like: Ö, Ä and Ü:

I tried therefore:

[re.search(r'^([^A-ZÄÖÜ]*[A-ZÄÖÜ]){i}',s).span()[1] for i in range (1,y)]

where y is the number of capital letters in s.

The second solution works if I define i, but under the loop, it returns:

attributeerror 'nonetype' object has no attribute 'span'.

How can I solve it in an efficient way?

`s = "ÖÄÜ"; [i for i, c in enumerate(s) if c.isupper()]` works fine and returns `[0, 1, 2]` on my computer. — Delgan, Nov 28 '17 at 08:13
Interesting. I tested it on Python 2.7 and Python 3.6, it works fine on 3.6 but fails with 2.7. Are you using Python 2.7? Do you have the option to update to Python 3? — Delgan, Nov 28 '17 at 08:24
I actually found the solution. Just the UNICODE. s=u'ÖÄÜ' solves the problem. Thank you! — DYEZ, Nov 28 '17 at 08:24
@DYEZ: As you have found the solution, you can post it as an answer... — Serge Ballesta, Nov 28 '17 at 08:37

score 0 · Answer 1 · answered Nov 28 '17 at 09:48

0

The problem is that s is represented in bytes. It needs just to be decoded to unicode:

s=u'ÖÄÜ'       # str to unicode
[i for i, c in enumerate(s) if c.isupper()]

answered Nov 28 '17 at 09:48

DYEZ

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user1767754 · Answer 2 · 2017-11-28T08:53:10.497

-1

Python3: You can do that with isupper() easily, no need for regex. Unfortunately, if you are using Python2.7 this will involve some nasty encoding/decoding, which I am not so familiar with.

x = "HEY thats Some Lower Case ZÄÖÜ"
print([i for i in range(0, len(x)) if x[i].isupper() ])
>[0, 1, 2, 10, 15, 21, 26, 27, 28, 29]

edited Nov 28 '17 at 08:53

answered Nov 28 '17 at 08:15

user1767754

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My question is about special characters – DYEZ Nov 28 '17 at 08:21
Special Characters or `vowel characters` like the `german Umlaut` If yes, this one works with `ä, Ä, ö, Ö, ü, Ü`as well. Oh...i am on python3 that might b the difference lemme check. – user1767754 Nov 28 '17 at 08:45

Getting indices of capital letters with regex

2 Answers2