Question: if I try to `import tkinter` in my project, pycharm underlines **tkinter** as being a missing library.

When I try to install the library, pycharm suggests to import the '**future**' library instead of the **tkinter** library. I don't know why.

If I go to the project interpreter window, I cannot find the **tkinter** library after clicking on the install packages button.

On the pycharm terminal, if I try to `pip install tkinter` it returns:

*Could not find a version that satisfies the requirement tkinter (from versions: )
No matching distribution found for tkinter*

I get the same result when trying `pip install python-tk`, `pip install python3-tk`, `and pip install tk`.

Does anyone know why this is?

I imported the project from windows into Ubuntu Mint 19.1, I am using interpreter Python 3.7.2. 

Please let me know if I can add any more useful info.

Answer: 
Install it via apt.

```
sudo apt-get update && sudo apt install python3-tk

```

Works for me.
**tkinter** is a built in library in python.

install this package :'**future**' using this command :

```
pip install future

```

now import '**tkinter**' in your project :

```
import tkinter

```