import re

def loopstrength(pword):
    if len(pword) < 8:
        print("First test: not strong - password is too short.")
        loopstr = False
    else:
        print("First test: strong")
        loopstr = False
    return loopstr

def regexstrength(pword):
    regexstr = False
    #At least 8 characters
    regexlen = re.match(".{8}", pword)
    #At least one upper
    regexup = re.match(r"[A-Z]+", pword)
    #At least one lower
    regexlo = re.match(r"[a-z]+", pword)
    #At least one digit
    regexdi = re.match("[0-9]+", pword)

    if regexlen is None:
        print("Second test: not strong - password is too short.")
    elif regexup is None:
        print("Second test: not strong - password must contain at least one uppercase character.")
    elif regexlo is None:
        print("Second test: not strong - password must contain at least one lowercase character.")
    elif regexdi is None:
        print("Second test: not strong - password must contain at least one digit.")
    else:
        print("Second test: strong")
        regexstr == True
    return regexstr

while True:
    usrpword = input("Enter a password (or 'quit' to exit): ")
    if usrpword == 'quit':
        print()
        break
    loopstrength(usrpword)
    regexstrength(usrpword)
    print()
print("Bye!")