Python by Swaroop C H - HTML preview

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Defining a Function

Example 7.1. Defining a function

#!/usr/bin/python
# Filename: function1.py

def sayHello():
print 'Hello World!' # block belonging to the function
# End of function

sayHello() # call the function

Output

$ python function1.py Hello World!

How It Works

We define a function called sayHello using the syntax as explained above. This function takes no parameters and hence there are no variables declared in the parentheses. Parameters to functions are just input to the function so that we can pass in different values to it and get back corresponding results.