How to get integer values from a string in Python

Question

Suppose I had a string  string1    498results should get     Now I need to get only integer values from the string like 498   Here I don t want to use list slicing because the integer values may increase like these examples   string2    49867results should get   string3    497543results should get     So I want to get only integer values out from the string exactly in the same order   I mean like 498 49867 497543 from string1 string2 string3 respectively   Can anyone let me know how to do this in a one or two lines

User · Answer

With python 3 6  these two lines return a list  may be empty    gt  gt  int x  for x in re findall   d    your string     Similar to   gt  gt list map int  re findall   d    your string

User · Answer

if you have multiple sets of numbers then this is another option   gt  gt  gt  import re  gt  gt  gt  print re findall   d     xyz123abc456def789      123    456    789     its no good for floating point number strings though

User · Answer

gt  gt  gt  import re  gt  gt  gt  string1    498results should get   gt  gt  gt  int re search r  d    string1  group    498   If there are multiple integers in the string    gt  gt  gt  map int  re findall r  d    string1    498

User · Answer

Here s your one-liner  without using any regular expressions  which can get expensive at times    gt  gt  gt     join filter str isdigit   1234GAgade5312djdl0      returns    123453120

User · Answer

def function string         final            for i in string            try                 final    str int i              except ValueError                return int final    print function  4983results should get

User · Answer

Iterator version   gt  gt  gt  import re  gt  gt  gt  string1    498results should get   gt  gt  gt   int x group    for x in re finditer r  d    string1    498

User · Answer

An answer taken from ChristopheD here  https   stackoverflow com a 2500023 1225603  r    456results string789  s      join x for x in r if x isdigit    print int s  456789

User · Answer

gt  gt  gt  import itertools  gt  gt  gt  int    join itertools takewhile lambda s  s isdigit    string1

[python] How to get integer values from a string in Python?

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