Lesson 8.1: Decorators and Generators
Introduction:
Decorators and generators are advanced Python features that enhance code efficiency, readability, and functionality. Decorators allow modifying the behavior of functions or classes, while generators provide memory-efficient ways to handle large sequences of data.
1. Decorators:
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A decorator is a function that wraps another function to extend or modify its behavior without changing its code.
Basic Syntax:
Output:
Use Cases:
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Logging
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Authorization
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Performance measurement
2. Generators:
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Generators are functions that yield values one at a time, saving memory.
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Use the
yieldkeyword instead ofreturn.
Example:
Output:
Advantages:
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Memory-efficient for large datasets
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Can represent infinite sequences
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Supports lazy evaluation
3. Practical Tips:
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Use decorators to add functionality without modifying the original function
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Use generators when working with large datasets or streams
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Combine decorators and generators for advanced functionality in Python programs
Learning Outcome of This Lesson:
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Understand the concept and syntax of decorators
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Implement generators to efficiently handle data sequences
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Apply these concepts to improve code readability and performance
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Utilize decorators and generators in real-world Python projects
