Flex Taped Password Generator

# my discord is OnlyJoking#6197 go ahead and add me if you want
import sys
import random

args = sys.argv[1:]

helpMessage = "Please provide a low number and a high number for the length (Low number first, high number second), then say either true or false for special characters such as: $:/^#@ etc."


low = ""
high = ""

special_chars = ""

try:
    low = args[0]
    high = args[1]

    special_chars = args[2]
except IndexError:
    print("\nInvalid arguments. "+helpMessage)
    sys.exit(0)

try:
    low = int(low)
    high = int(high)

    if(special_chars.lower() == "true"): # kill me
        special_chars = bool(True)
    else: # anything else but true we'll just let the user slide with
        special_chars = bool(False)
except ValueError:
    print("\nFailed to parse arguments. "+helpMessage)
    sys.exit(0)

length = random.randint(low, high)
characters = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789")

if(special_chars):
    characters.append("!") # why can i not just have these all in a string then list() them? like really python? i did it with the characters
    characters.append("@") # like characters.append(list("!@#$%^&*:<>?")), that's it python.
    characters.append("#")
    characters.append("$")
    characters.append("%")
    characters.append("^")
    characters.append("&")
    characters.append("*")
    characters.append(":")
    characters.append("<")
    characters.append(">")
    characters.append("?")

password = ""

charAmount = 0
while charAmount < length: # gen the password
    password += random.choice(characters)
    charAmount += 1

print("\n"+password)


# ARE YOU READY KIDS!?!? THIS IS WHERE THE CODE BECOME WORSE! I KNOW, YOU THOUGHT IT WAS IMPOSSIBLE.
savePassword = ""

def savePasswordFile():
    sys.stdout.write("\nWhat website is this account for? (The name not domain)\n")
    account = input().lower()

    sys.stdout.write("\nWhat is the username/email address for the account?\n")
    username = input().lower()

    passwordFile = open(account+" ("+username+").txt", "w")
    passwordFile.writelines("Hello, on the left side of the colon (this: ':') is the username/email,\nand on the right sideis the password that was generated.\n")
    passwordFile.writelines(username+":"+password)
    passwordFile.close()

    print("password saved!")

    sys.exit(0)
def askToSave(repeat):
    sys.stdout.write("\nWould you like to save this password? (y/n)\n")
    if(repeat == True):
        savePassword = input().lower()

        if(savePassword == "y"): # using this two times but i'm too lazy to figure out how to put it into a function, if that's even possible
            savePasswordFile()
        elif(savePassword == "n"):
            sys.exit(0)
        else:
            print("Invalid choice!")
            askToSave(True)

askToSave(False)

savePassword = input().lower()

if(savePassword == "y"):
    savePasswordFile()
elif(savePassword == "n"):
    print("\nExiting...")
    sys.exit(0)
else:
    print("\nInvalid choice!")
    askToSave(True)

sys.exit(0)