I'm trying my hands on Turtle but I can't get the module installed.

I have searched a lot and people seems to imply that it is included in the Python
standard library with Tkinter but this doesn't seem to be the case for me.

when I do:

```
import Tkinter 

```

everything seems ok. But when I try

```
t1 = Turtle()

```

I get the error 

```
NameError: name 'Turtle' is not defined

```

As per the tutorial I'm suppose to import like this:

```
from turtlegraphics import Turtle

```

But no matter what I've tried I cant find how I can get the library installed.