Sum of strings extracted from text file using regex

Question

I am just learning python and need some help for my class assignment.

I have a file with text and numbers in it. Some lines have from one to three numbers and other

Answer 1

import re
text = open('text_numbers.txt')
data=text.read()
print sum(map(int,re.findall(r"\b\d+\b",data)))

Use .read to get content in string format