The simplest way to obtain Transcrypt is by pip-installing it like any other Python package. If you've only got Python 3.7 installed, typing python -m pip install transcrypt at the console will work in most cases. If the situation is more complicated, follow the steps described in the Transcrypt manual.
If you prefer downloading a zipped version of the current release for manual installation, you'll find it at the Python package index. For the bleeding edge version, refer to the contribute section of this site.
Type python -m pip install numscrypt at the console. Since Numscrypt depends on Transcrypt, Transcrypt will be automatically installed as well if it isn't yet there. For alternative methods, follow the steps described in the Numscrypt manual.
If you prefer downloading a zipped version of Numscrypt for manual installation, you'll find it at the Python package index. You're very welcome to contribute to expanding Numscrypt's available set of operations.