PYTHON

pyhton regex to find string in file

  # Open file
  f = open('test.txt', 'r')
  # Feed the file text into findall(); it returns a list of all the found strings
  strings = re.findall(r'some pattern', f.read())

python regex search file

import re
pattern = re.compile("<(d{4,5})>")

for i, line in enumerate(open('test.txt')):
    for match in re.finditer(pattern, line):
        print('Found on line %s: %s' % (i+1, match.group()))