find number in string code example

Example 1: python get numbers from string

string = "abc123"
# Method 1
''.join(char for char in string if char.isdigit())

#Method 2
import re
re.sub("[^0-9]", "", string)

Example 2: how to check a number in string

To find whether a given string contains a number,
convert it to a character array and find whether 
each character in the array is a digit using the isDigit() 
method of the Character class