Page 129 - Computing E-Book Grade 7

The City School 2021-2022

Sample Code-1

The sample code below demonstrates how functions are used in python:

# This declares the function
called my_function()

def my_function():
print(“Hello from a

function”)
# Calling the function Programming the Computer-Python

my_function()

1. Keyword def marks the start of function header.

2. A function name to uniquely identify it. Function naming follows the same rules of
writing identifiers in Python.

3. Parameters (arguments) through which we pass values to a function. They are
optional.

4. A colon (:) to mark the end of function header.
5. The last line executes the function, we can call or use the function in our code

wherever it is needed.

Sample Code-2

# This declares the function
called print_name()

def print_name():
print(“Enter your name”)

yourName=input()
print(“Hi ”+yourName)

# Calling the function
print_name()

Sample Code-3

We have already experienced this code earlier but now we have converted the same
into a function and now it can be recalled and reused whenever required in the

program.

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