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yashshah1/password_validator.py

Last active May 22, 2019 10:34
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Password validtor
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password_validator.py
import re
"""
A website requires the users to input username and password to register.
Write a program to check the validity of password input by users.
Following are the criteria for checking the password:
1. At least 1 letter between [a-z]
2. At least 1 number between [0-9]
3. At least 1 letter between [A-Z]
4. At least 1 character from [$#@]
5. Minimum length of transaction password: 6
6. Maximum length of transaction password: 12
Your program should accept a sequence of comma separated passwords and will check them according to the above criteria.
Passwords that match the criteria are to be printed, each separated by a comma.
Example: If the following passwords are given as input to the program:
ABd1234@1,a F1#,2w3E*,2We3345
Then, the output of the program should be:
ABd1234@1
"""
passwords = input().strip().split(',')
regex_pattern = "^(?=.*[a-z])(?=.*\d)(?=.*[A-Z])(?=.*[@$#])[A-Za-z\d@$#]{6,12}$"
regex_pattern = re.compile(regex_pattern)
valid_passwords = []
for i in passwords:
if re.match(regex_pattern, i):
valid_passwords.append(i)
print(" ".join(valid_passwords))
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