Page 113 - TCS ICT Book 8

The City School 2021-2022

5.10. Python Functions

In Python, a function is a group of related statements that perform a specific task.

Functions help break our program into smaller and modular chunks. As our program
grows larger and larger, functions make it more organized and manageable.

Furthermore, it avoids repetition and makes code reusable. Function names cannot
have spaces in between. Instead of spaces use _ underscore to connect the words.

In Python, a function is defined using the def keyword and for executing the function
we can use the function name along with parentheses ().

The sample code below demonstrates how functions are used in python: Programming Robots & Single-Board Computers

Sample code:

# This declares the function called my_function()
def my_function():

print(“Hello from a function”)

# Calling the function
my_function()

Output:

Hello from a function

5.11. Getting Started with Python and Raspberry Pi

One of the classic electronic analogy to “Hello World”

is to make an LED blink. It is one of the very basic
tutorials to begin with. To get started, you first of all

need to build the circuit on the breadboard; a board
for electronic prototyping.

Equipment needed

Following componentes are required for this project:

• 1 breadboard

• 1 LED

• 2 jumper wires
• 1 resistor: 220Ω/1KΩ

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