TOPIC 4: Functions & Code Documentation

4. Built-in Functions in Python

Python has many built-in functions that are available for use without needing to define them. These functions perform common tasks and are essential for Python programming.

Common Built-in Functions:

print(): Outputs data to the console.

print("Hello, World!")

len(): Returns the length of an object (e.g., string, list).

my_list = [1, 2, 3]

print(len(my_list))  # Output: 3

type(): Returns the type of an object.

x = 5
print(type(x))  # Output: <class 'int'>

str(): Converts an object to a string.

x = 100

print(str(x))  # Output: '100'

int(): Converts an object to an integer.

x = "10"
print(int(x))  # Output: 10

sum(): Returns the sum of elements in an iterable (like a list).

numbers = [1, 2, 3]
print(sum(numbers))  # Output: 6

1. 

max(): Returns the largest item in an iterable.

numbers = [1, 2, 3, 4]
print(max(numbers))  # Output: 4

min(): Returns the smallest item in an iterable.

numbers = [1, 2, 3, 4]
print(min(numbers))  # Output: 1