Скачать или смотреть Creating a Python Function to Validate Passwords: Length and Special Characters

Learn how to create an effective `Python` function to check if a password meets length requirements and includes special characters and digits.
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Creating a Basic Python Function to Validate Passwords

As a beginner in Python, you may encounter challenges when trying to validate passwords according to specific criteria. This guide will guide you through creating a basic function to determine if a password is valid based on defined rules.

The Problem

You need to write a function that checks if a password string meets the following requirements:

Contains at least one digit (0-9).

Includes at least one special character from the list ['$', '# ', '@ ', '.', '!', '?', '<', '>'].

Has a minimum length of 6 characters.

If a password complies with these conditions, the function should return True; otherwise, it should return False.

Understanding the Solution

We will build our solution step-by-step by creating individual functions for each requirement and then combining them into a single function that checks all the passwords.

Step 1: Checking for Special Characters

We start with a function that checks if the password contains any special characters.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Checking the Length of the Password

Next, we create a function to check if the password length is at least 6 characters.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Checking for Digits

We also need a function to check if there is at least one digit present in the password.

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Combining the Functions

Finally, we will create a function that accepts a list of passwords and checks each password against the three previously defined functions.

[[See Video to Reveal this Text or Code Snippet]]

Putting It All Together

Now, let's test this on a list of passwords.

[[See Video to Reveal this Text or Code Snippet]]

Expected Output

When you run the check_pwd function with the provided password list, you will see whether each password passed all checks:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Creating a password validation function in Python is a great way to practice your programming skills. By breaking down the requirements into simple functions, you not only enhance your understanding of Python functions but also get a chance to work on conditionals, loops, and logic testing. Remember, practice makes perfect; keep experimenting with your code!