Let's get to know, what are the various ways to import a module within a python file.

We will take example of one of the famous module named as "

**MATH**" and a function

**sqrt (**used to calculate the square root

**)**within the module.

It provide access to mathematical functions defined by C, to get to know more about it visit the official link

Here are the various ways we can import it.

### Import the whole module.

Usage.

**module_name.function_name**

### Create alias of the imported module.

In case, if you feel using such a big name of your module or nor relevant to it's behavior, you can create the module's name alias.Let's take the example of the same

**math**module, i will be creating alias

**m**for it.

Usage:

### Import only specific function, functions from a particular module.

A particular module consists of lot of functions in it, sometimes, we just need only a particular function out of entire module.Again let's take the same module as an example.module math contains, a lot of functions within it some are as below.

**sqrt()**

**ceil()**

**floor()**

**pow(x,y)**

**factorial()**

**fabs()**

**fmod(x,y)**

**sin()**

**cos()**

Now, in case we need only one function

**sqrt() ,**here is the way how we only import a function from a module.

Usage:

In case, if we need more then one function.

Now, if you just simply don't want to write math every time and want to use all of the functions within the module.

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