Regex Password Validation Python Codewars

You need to write regex that will validate a password to make sure it meets the following criteria:

• At least six characters long
• contains a lowercase letter
• contains an uppercase letter
• contains a number

Valid passwords will only be alphanumeric characters.

regex = (
    '^'            # start line
    '(?=.*\d)'     # must contain one digit from 0-9
    '(?=.*[a-z])'  # must contain one lowercase characters
    '(?=.*[A-Z])'  # must contain one uppercase characters
    '[a-zA-Z\d]'   # permitted characters (alphanumeric only)
    '{6,}'         # length at least 6 chars
    '$'            # end line
)

Related Posts