I want to extract string from a string that also contains numbers - python

Question

I have a string:

"23423 NewYork"

I want only NewYork from it. I could chop it into pieces, but the order can be different like "newyork 23244" etc..

what is the best way of extracting string from string which has also numbers in it?

Can you provide a better specification of what the input could look like and what the output should be? What if the input is "New York 1234"? What if it's "New York"? What if it's "New 1234 York"? What if it's the complete text of Hamlet? — user2357112
– user2357112, Commented Dec 17, 2013 at 10:24
Is it always divided in two or can they be mixed like "232 NewYork 123131 City"? — Christian P.
– Christian P., Commented Dec 17, 2013 at 10:24

inspectorG4dget · Accepted Answer · 2013-12-17 10:28:08Z

3

>>> s = "23423 NewYork"
>>> [sub for sub in s.split() if all(c.isalpha() for c in sub)]
['NewYork']
>>> s = "NewYork 23423"
>>> [sub for sub in s.split() if all(c.isalpha() for c in sub)]
['NewYork']

answered Dec 17, 2013 at 10:28

inspectorG4dget

115k30 gold badges159 silver badges253 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Nafiul Islam Over a year ago

I liked this one the most, but I can't help put put in an itertools solution here as well.

inspectorG4dget Over a year ago

@doniyor: yup! give it a shot ;]

rook · Accepted Answer · 2013-12-17 10:31:02Z

2

import re
s = "23423 NewYork"
m = re.findall('NewYork', s)

nah?

import re
s = "23423 NewYork"
m = re.findall(r'[^\W\d]+', s)

more general case

answered Dec 17, 2013 at 10:31

rook

6,3305 gold badges42 silver badges54 bronze badges

3 Comments

Nafiul Islam Over a year ago

what does nah mean?

rook Over a year ago

shortcut for "would it be suitable"

inspectorG4dget Over a year ago

would that not be "wibs"?

Mevin Babu · Accepted Answer · 2013-12-17 10:33:33Z

1

from re import sub

s= "23423 NewYork"
sub('\d',"",s).strip()

This should do what you need.

\d removes all digits from the string and strip() should remove any extra spaces .

answered Dec 17, 2013 at 10:33

Mevin Babu

2,48524 silver badges35 bronze badges

Comments

Nafiul Islam · Accepted Answer · 2013-12-17 10:41:52Z

1

You may also try the following using itertools:

from itertools import takewhile, dropwhile

a = "23423 NewYork"
b = "NewYork 23423"


def finder(s):
    if s[0].isdigit():
        return "".join(dropwhile(lambda x: x.isdigit() or x.isspace(), s))
    else:
        return "".join(takewhile(lambda x: not x.isdigit() or x.isspace(), s))

if __name__ == '__main__':
    print finder(a)
    print finder(b)

answered Dec 17, 2013 at 10:41

Nafiul Islam

82.9k33 gold badges145 silver badges202 bronze badges

3 Comments

doniyor Over a year ago

Does this also extract "new 233 york"?

Nafiul Islam Over a year ago

@doniyor Was it supposed to? I did not see that in your specification. But to answer your question, no it will not work.

doniyor Over a year ago

Oh yeah sorry i forgot to mention it... I will work on it later then, thanks in tons anyway for your help.. waiting for train in trainstation :)

Collectives™ on Stack Overflow

I want to extract string from a string that also contains numbers - python

4 Answers 4

2 Comments

3 Comments

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

3 Comments

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related