how to convert string to int in jupyter notebook code example

Example 1: how to get a int from string python

import re
s = "12 hello 52 19 some random 15 number"
# Extract numbers and cast them to int
list_of_nums = map(int, re.findall('\d+', s))
print list_of_nums

Example 2: python string to int

print(int("12"))