Password.py

# Python3 program to check if a given
# password is strong or not.
def printStrongNess(input_string):
    n = len(input_string)

    # Checking lower alphabet in string
    hasLower = False
    hasUpper = False
    hasDigit = False
    specialChar = False
    normalChars = "abcdefghijklmnopqrstu"
    "vwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 "

    for i in range(n):
        if input_string[i].islower():
            hasLower = True
        if input_string[i].isupper():
            hasUpper = True
        if input_string[i].isdigit():
            hasDigit = True
        if input_string[i] not in normalChars:
            specialChar = True

    # Strength of password
    print("Strength of password:-", end="")
    if (hasLower and hasUpper and
            hasDigit and specialChar and n >= 8):
        print("Strong")

    elif ((hasLower or hasUpper) and
          specialChar and n >= 6):
        print("Moderate")
    else:
        print("Weak")


# Driver code
if __name__ == "__main__":
    input_string = input("Enter a password")

    printStrongNess(input_string)