Python: Learn Python in One Day and Learn It Well. Python for Beginners with Hands-on Project. (Learn Coding Fast with Hands-On Project Book 1) by LCF Publishing & Jamie Chan

Author:LCF Publishing & Jamie Chan [Publishing, LCF]
Language: eng
Format: epub
Publisher: Learn Coding Fast
Published: 2014-12-18T22:00:00+00:00

Defining Your Own Functions

We can define our own functions in Python and reuse them throughout the program. The syntax for defining a function is as follows:

def functionName(parameters):

code detailing what the function should do

return [expression]

There are two keywords here, def and return.

def tells the program that the indented code from the next line onwards is part of the function. return is the keyword that we use to return an answer from the function. There can be more than one return statements in a function. However, once the function executes a return statement, the function will exit. If your function does not need to return any value, you can omit the return statement. Alternatively, you can write return or return None.

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