python find all in string code example

Example 1: python find all elements of substring in string

def find_all(a_str, sub):
    start = 0
    while True:
        start = a_str.find(sub, start)
        if start == -1: return
        yield start
        start += len(sub) # use start += 1 to find overlapping matches

list(find_all('spam spam spam spam', 'spam')) # [0, 5, 10, 15]

Example 2: searching for a pattern in text with re python

import re
xx = "guru99,education is fun"
r1 = re.findall(r"^\w+",xx)
print(r1)