CODEWITHSUNDEEP
pythonauthentication
Albert Wesker
Albert Wesker

Reputation: 1

Link username and password in Python

Newbie to python and just trying to get a grasp of things.

Ive written a practice piece of code where a user is asked to enter their username and password from this mock database. My question is how do I get the username to correlate with the password for any given user? So user "amy" password would be "apple". Do I need just a single variable setup as a dictionary instead or something along those lines?

list= ["amy", "chris", "jake"]

password = ["apple", "orange", "date"]

login = ("")

counter = 0

attempts = 5

out_of_attempts = False

while login not in list and not (out_of_attempts):

    if counter < attempts:
        login = input ("enter username: ")
        counter += 1
    else:
        out_of_attempts = True

if out_of_attempts:

        print ("Sorry login limit exceeded please try again later")

else:
        pass
        
while login not in password and not (out_of_attempts):

        if counter < attempts:
            login = input ("now password please: ")
            counter += 1
        else:
            out_of_attempts = True
    
            
if out_of_attempts:

        print ("sorry password limit exceeded, try again later")

else:
    print ("thank you please wait")

Upvotes: 0

Views: 1079

Answers (3)

Ironkey
Ironkey

Reputation: 2607

Simple slightly more secure way that allows you to store more than just passwords

import hashlib

db = {}

hash = lambda x: hashlib.md5(x.encode()).hexdigest()

def register(user, password, mail):
    db[user] = {"password": hash(password), "mail": mail}

def login(user, password):
    if db[user]["password"] == hash(password):
        print("success!")
    else:
        print("fail")

register("ironkey", "password123", "[email protected]")

login("ironkey", "password")
login("ironkey", "password123")

# get credentials for the user ironkey
print(db["ironkey"])

fail
success!
{'password': '482c811da5d5b4bc6d497ffa98491e38', 'mail': '[email protected]'}

Upvotes: 0

Collin Heist
Collin Heist

Reputation: 2682

The equivalent 'mapping' of your usernames/passwords can be done as:

credentials = {
    'amy': 'apple',
    'chris': 'orange',
    'jake': 'date',
}

These allow you to quick 'checks' such as: username in credentials (return True or False) to see if a username has a password; get the password for a given username with credentials[username], etc.

Upvotes: 0

wasif
wasif

Reputation: 15478

Yeah, a dictionary setup will be better:

auth = {'amy': 'apple'....

And so on. Code modification would not be so hard. To get the password of an user (use this to set too)

auth[login]

Upvotes: 1

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