What are Python Decorators?
Decorators are special functions in Python that modify or enhance other functions without changing their actual code. They wrap another function to extend its behavior in a clean and readable way.
Why Use Decorators?
- Code Reusability: Apply the same enhancement to multiple functions without repeating code.
- Separation of Concerns: Keep core functionality separate from auxiliary features like logging or access control.
- Improved Readability: Make code more organized and easier to understand.
How to Use Decorators?
Creating a Simple Decorator
Let’s create a decorator that adds Filipino greetings before and after a function executes.
x
20
1
def filipino_greeting_decorator(func):2
def wrapper():3
print("Mabuhay! Starting the function...")4
func()5
print("Salamat! Function completed.")6
return wrapper7
8
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def celebrate_festival():10
print("Nagpupugay sa Pasko at mga Pista!")11
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celebrate_festival()13
14
"""15
Expected Output: 16
17
Mabuhay! Starting the function...18
Nagpupugay sa Pasko at mga Pista!19
Salamat! Function completed.20
"""Decorator with Arguments using enumerate
Enhance a function that schedules festival events by logging each event with its number.
1
23
1
def event_logger_decorator(func):2
def wrapper(festival, events):3
print(f"Scheduling events for {festival}:")4
func(festival, events)5
return wrapper6
7
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def schedule_events(festival, events):9
for idx, event in enumerate(events, start=1):10
print(f"{idx}. {event}")11
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festival_events = ["Street Dancing", "Parade", "Cultural Show", "Fireworks"]13
schedule_events("Sinulog", festival_events)14
15
"""16
Expected Output:17
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Scheduling events for Sinulog:19
1. Street Dancing20
2. Parade21
3. Cultural Show22
4. Fireworks23
"""