guard-decorator 0.1.0

A decorator to simplify error handling in Python.

Guard

Guard is a Python library designed to simplify exception handling in your code. By using the guard decorator, you can significantly reduce the boilerplate code associated with try-except-finally blocks, making your code cleaner and more readable.

Features

• Simplified Exception Handling: Easily handle exceptions with minimal boilerplate code.
• custom Handlers: Specify custom exception handlers for different exceptions.
• Cleanup Actions: Automatically perform cleanup actions after function execution, regardless of success or failure.
• Support for Classes: Use guard with class methods to maintain clean and effective error handling.

Installation

You can install the guard library via pip:

pip install guard

Basic usage:

from guard import guard

# Exception handler
def handle_division_error(e, *args, **kwargs):
    print(f"Caught exception: {e}")

@guard(h=handle_division_error)
def divide_numbers(a, b):
    print(f"Dividing {a} by {b}")
    return a / b

print(f"Result: {divide_numbers(10, 2)}")   # OK
print(f"Result: {divide_numbers(10, 0)}")   # Raises Exception

That code will produce the following output:

Dividing 10 by 2
Result: 5.0
Dividing 10 by 0
Caught exception: division by zero
Result: None

You can also specify exception type

@guard(type=ValueError, h=handle_value_error)
def risky_function(value):
    if value < 0:
        raise ValueError("Negative value not allowed!")

And cleanup actions

def cleanup_file(*args, **kwargs):
    print("Cleaning up resources...")

@guard(f=cleanup_file)
def open_file(file_name):
    raise FileNotFoundError("File not found!") # Simulate error

open_file("non_existent_file.txt")

License

This project is licensed under the Apache 2.0 License