2 Answers
+ 3
If you mean to code on a computer, you can download the plain old python package from
https://www.python.org/
It contains a simple code editor (IDLE) and you can install with pip easily whatever library you need.
Another popular option is:
https://www.anaconda.com/
Which has many libraries pre-bundled, typically those needed for statistical analysis and machine learning.
On a computer people typically use a more advanced IDE program such as Pycharm or VSCode, these can really speed up the development process with many useful tools.
If you want something for an Android device then get PyDroid from the Play store.
+ 2
Even if you find this platform, you must learn to install frameworks and libraries. Most of them don't come pre-installed, and it is impossible and useless to have thousands of things that you won't ever use.
Chose a single platform, and learn to install things on it, using pip (or similar, if there is), because that's how things should be done.
Also, turtle is in the standard python library, so it will be available in most platforms.