How to Build an Account Checker in Under 20 Lines of Python
Let's build a real-world Python application! In this video, we put all of our beginner Python skills to the test by creating a complete Account Registration Validator.
You'll learn how to take user inputs, sanitize username strings, run multiple conditional validation checks simultaneously, and use modulo arithmetic to generate a secure verification PIN code.
📝 CODE WRITTEN IN THIS VIDEO:
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System Configuration Rules
min_age = 18
min_password_length = 6
Gathering User Inputs
full_name = input("Enter your full name: ")
username = input("Create a username: ")
age_input = input("Enter your age: ")
password = input("Create a password: ")
Data Cleaning & Type Casting
age = int(age_input)
username_clean = username.lower().strip()
Multi-Condition Validation Checks
(Plain text description of the logic code checks to avoid bracket symbols)
1. We check if the clean username length is at least 3 characters.
2. We check if the age is at least our minimum age.
3. We check if the password length is at least our minimum password length.
4. We check if the password is not equal to the word "password".
All checks must evaluate to True.
🧠 BONUS CHALLENGES:
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Test your programming skills! Comment your solutions below.
Challenge 1:
If age is 20, what is the output of the verification PIN calculation?
Formula: (age multiplied by 10) modulo 100
Options:
A) 200
B) 0
C) 20
Challenge 2:
What happens if a user inputs a password that is exactly 6 characters long and matches the system minimum?
Options:
A) It passes the length check
B) It fails the length check
C) The code throws an error
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