Python function | Function in python | Functions ||Class14 смотреть онлайн

Python Tutorial for Beginners : We are going to explain python function and it's a very important topics in any language

A function is a block of code which only runs when it is called.

You can pass data, known as parameters, into a function.

A function can return data as a result.
Creating a Function
In Python a function is defined using the def keyword:
Calling a Function
To call a function, use the function name followed by parenthesis:

Parameters
Information can be passed to functions as parameter.

Parameters are specified after the function name, inside the parentheses. You can add as many parameters as you want, just separate them with a comma.

The following example has a function with one parameter (fname). When the function is called, we pass along a first name, which is used inside the function to print the full name:
Default Parameter Value
The following example shows how to use a default parameter value.

If we call the function without parameter, it uses the default value:

Passing a List as a Parameter
You can send any data types of parameter to a function (string, number, list, dictionary etc.), and it will be treated as the same data type inside the function.

E.g. if you send a List as a parameter, it will still be a List when it reaches the function:

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