Python Forum

(Apr-01-2017, 05:15 AM)wavic Wrote: [ -> ]I was thinking that you want the user to enter the username again after hitting the "Enter" button if thoughts.

While True:
    if prompt_username in names:
        print('The user exists!')
        prompt_username = input(prompt_message)
    else:
        break

Hey, that code actually works perfect! Thank you so much for that. I figured out another way I could do this as well. As far as creating a file if it does not exist already... Thanks for the while loops I don't know why I didn't think to flag it True.
I could probably modify and implement this into my code and use a dict() to read in, check, and append user info to. Username:Password
Example of opening and saving user data:

import json

def greet_user():
    filename = 'username.json'

    try:
        with open(filename) as f_obj:
            username = json.load(f_obj)
    except FileNotFoundError:
        with open(filename, 'w') as f_obj:
            username = input("What is your name? ")
            json.dump(username, f_obj)
            print("We'll remember you when you come back, " + username + "!")
    else:
        print("Welcome back, " + username + "!")

greet_user()

---

Another good example would be to add user info like such:

import json

def get_stored_username():
    filename = 'username.json'
    try:
        with open(filename) as f_obj:
            username = json.load(f_obj)
    except FileNotFoundError:
        return None
    else:
        return username



def greet_user():
    username = get_stored_username()
    if username:
        print("Welcome back, " + username + "!")
    else:
        username = input("What is your name? ")
        filename = 'username.json'
        with open(filename, 'w') as f_obj:
            json.dump(f_obj)
            print("We'll remember you when you come back, " + username + "!")

greet_user()

Don't forget to hash the passwords. Look at bcrypt

(Apr-01-2017, 08:56 PM)wavic Wrote: [ -> ]Don't forget to hash the passwords. Look at bcrypt

Ok will do. Thanks for the help. It was greatly appreciated my friend! Hopefully one day I'll be able to provide help to the programming community just like you guys do. wavic / Larz :D