import random


def PasswordGeneratorMain(PWLength):
    alphabet_lower = "abcdefghijklmnopqrstuvwxyz!"
    alphabet_upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    alphabet_special = "@#$%^&*(),./<>?;':[]{}-=_"
    alphabet_number = "1234567890"

    total_search = alphabet_lower + alphabet_upper + alphabet_special + alphabet_number
    random_pw = []

    PWLength = int(PWLength)
    if PWLength > 1000:
    	FinalPW = "Password is too long. 1000 is the max!"
    else:
        value = random.randrange(len(alphabet_lower))
        random_pw.insert(0, alphabet_lower[value])
        value = random.randrange(len(alphabet_upper))
        random_pw.insert(1, alphabet_upper[value])
        value = random.randrange(len(alphabet_special))
        random_pw.insert(2, alphabet_special[value])
        value = random.randrange(len(alphabet_number))
        random_pw.insert(3, alphabet_number[value])

        count = 4
        while count < PWLength:
            value = random.randrange(len(total_search))
            random_pw.insert(count, total_search[value])
            count += 1


        random.shuffle(random_pw)
        FinalPW = ''.join(random_pw)
    return FinalPW