import re
fileName = '13chil.txt'# your file name
with open(fileName,'r') as f:
    data = f.read()
digits = (re.findall('[0-9]+',data))
print(sum(list(map(int,digits))))

821a2ff58d9b6a622ab3390d7e67bed09dbdea73
<mask token>

<mask token>
with open(fileName, 'r') as f:
    data = f.read()
<mask token>
print(sum(list(map(int, digits))))

<mask token>
fileName = '13chil.txt'
with open(fileName, 'r') as f:
    data = f.read()
digits = re.findall('[0-9]+', data)
print(sum(list(map(int, digits))))

import re
fileName = '13chil.txt'
with open(fileName, 'r') as f:
    data = f.read()
digits = re.findall('[0-9]+', data)
print(sum(list(map(int, digits))))

import re
fileName = '13chil.txt'# your file name
with open(fileName,'r') as f:
    data = f.read()
digits = (re.findall('[0-9]+',data))
print(sum(list(map(int,digits))))
