Python Functions: Defining and Calling
Functions in Python are blocks of code designed to perform specific tasks. They help in organizing code into reusable chunks.
**Defining Functions**
Functions are defined using the `def` keyword followed by the function name and parentheses:
def greet(name):
print(f”Hello, {name}!”)
**Calling Functions**
You call functions by using their name followed by parentheses:
greet(“Alice”) # Output: Hello, Alice!
**Function Arguments**
Functions can accept parameters to work with:
def add(a, b):
return a + b
result = add(5, 3)
print(result) # Output: 8
**Return Statement**
The `return` statement is used to send a result back from a function:
def square(x):
return x * x
**Example**:
print(square(4)) # Output: 16
**Conclusion**
Functions are essential for creating modular code and reusing code efficiently. They help in breaking down complex problems into simpler, manageable pieces.
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