regex_email

import re

regex = re.compile(r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b')

with open(path, 'rt') as f:
    for line in f:
        if re.fullmatch(regex, line):
            pass
        else:
            #print("Invalid email")
            print(line)