Functions in Python are blocks of reusable code that perform specific tasks. They help make programs more organized, readable, and efficient. A function is defined using the def keyword, followed by the function name and parentheses. Inside the parentheses, you can specify parameters, which act as inputs to the function. After the function name, the code block begins with indentation, and inside this block, the task is performed. Functions can also return values using the return statement. For example:
python
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def greet(name):
return f"Hello, {name}!"
print(greet("Alice"))
In this example, the greet function takes a name as input and returns a greeting message. Functions make it easier to manage complex programs by breaking them into smaller, manageable pieces.
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