get rid of all external libraries, e.g. `pip install requests`

replace the (external, pypi) _comfortable_

import requests

by (internal, needs no extra pip installation) the _more tedious_

import urllib, json

to fetch the PlutoTv API call URL, and parse the contained json.

See e.g. [urllib manual](https://docs.python.org/3/howto/urllib2.html) and [json manual](https://docs.python.org/3/library/json.html), and perhaps even the [requests sourcecode](https://github.com/psf/requests) because that builds on top of internal libraries.

Intention: Then the code runs easier in any environment where install from pypi is difficult or impossible.
Perhaps it could be run even in places like this: https://reqbin.com/code/python

### good first issue
This is a **good first issue**, because you can always compare the "before and after", and it's rather easy.