strings

[wanstrjm]

How do I get the digits out of a string?
Example: string1 = "23.45a"
I need to remove the alpha characters and keep the digits.

[ilikepython]

How do I get the digits out of a string?
Example: string1 = "23.45a"
I need to remove the alpha characters and keep the digits.

Like this?
[code=python]
string1 = "23.45a"

digits = [int(c) for c in string1 if c.isDigit()] # not sure about the isDigit method

#import string
#digits = [int(c) for c in string1 if c in string.digits]
[/code]

[bvdet]

This solution uses module re:[code=Python]import re
string1 = "23.45a"
string2 = "23.a"
string3 = ".45a"
patt = re.compile(r'(\ d*.\d*)')

print float(patt.sear ch(string1).gro up(1))
print float(patt.sear ch(string2).gro up(1))
print float(patt.sear ch(string3).gro up(1))[/code]

>>> 23.45
23.0
0.45
>>>

[ghostdog74]

make use of existing string functions

''.join([i for i in list(s) if not i.isalpha()])