How to Create a Login System with JSON and Python?

Estimated read time 2 min read

Creating a login system using JSON and Python involves several steps, including creating a JSON file to store user credentials, implementing user registration, handling user login, and adding appropriate error handling. Here’s a basic example:

  1. Create a JSON file to store user credentials. You can create a JSON file called users.json with an empty dictionary to store user data:
{}
  1. Implement user registration. Allow users to register by collecting their username and password, and storing them in the users.json file. You can use the json module in Python to read and write data to/from the JSON file. Here’s an example:
import json

# Load existing user data from JSON file
with open('users.json', 'r') as f:
    users = json.load(f)

# Collect user registration details
username = input("Enter username: ")
password = input("Enter password: ")

# Store user data in the JSON file
users[username] = password
with open('users.json', 'w') as f:
    json.dump(users, f)

print("User registered successfully!")
  1. Implement user login. Allow users to enter their credentials and verify them against the data stored in the users.json file. Here’s an example:
import json

# Load user data from JSON file
with open('users.json', 'r') as f:
    users = json.load(f)

# Collect user login details
username = input("Enter username: ")
password = input("Enter password: ")

# Verify user credentials
if username in users and users[username] == password:
    print("Login successful!")
else:
    print("Invalid username or password.")
  1. Add appropriate error handling. For example, you can handle cases where the user is not found in the users.json file or if the entered password does not match the stored password.

Note: This is a basic example for illustrative purposes only and may not be secure for production use. In a real-world login system, you should use proper password hashing techniques, secure storage of credentials, and other security measures to protect user data.

You May Also Like

More From Author

+ There are no comments

Add yours

Leave a Reply