The latest version of Raspbian (as of April 2022) includes python 3.9. However, if you are running an older Raspbian version, you probably cannot get anything better than python 3.5. This means you will have to build it yourself. You will also need to build every single python package. While many python packages (such as Numpy, Pandas and Matplotlib) are straightforward to build, Ccxt (CryptoCurrency eXchange Trading Library) requires some extra steps since it needs the rust compiler.
- Install the required build-tools (some might already be installed on your system).