Python Functions

Functions in Python allow you to write reusable blocks of code, making your programs more efficient and organized.

Defining a Function

Use the def keyword to create a function.

def greet():
    print("Hello, welcome to Python!")
        

Calling a Function

To use a function, simply call it by its name.

greet()
        

Function Parameters

Functions can take parameters to make them more dynamic.

def greet_user(name):
    print(f"Hello, {name}!")

greet_user("Alice")
        

Returning Values

Functions can return values using the return statement.

def add(a, b):
    return a + b

result = add(3, 5)
print(result)  # Output: 8
        

Default Arguments

Python allows setting default values for parameters.

def greet(name="Guest"):
    print(f"Hello, {name}!")

greet()  # Output: Hello, Guest!
greet("Bob")  # Output: Hello, Bob!
        

Conclusion

Functions are essential in Python, enabling modular programming. Next, we'll explore lambda functions!