How do I debug Python code

Debugging Python code is an essential skill for every programmer. Here are some techniques and tips to help you identify and fix issues in your code.

Common Debugging Techniques

Print Statements: Use print statements to check the values of variables at different stages of your program.
Logging: Implement logging to have a more controlled way of outputting debug information.
Using a Debugger: Utilize a debugger like pdb or an IDE with debugging features (e.g., PyCharm, Visual Studio Code) to step through your code.
Unit Testing: Write tests to validate your code, which can also help identify errors early.

Example of a Simple Debugging Process


def faulty_function(x):
    return x / 0  # Intentional error for demo

try:
    faulty_function(5)
except ZeroDivisionError as e:
    print(f"An error occurred: {e}")  # Debug output

Debugging Python code error handling print statements unit testing logging debugger