You will need python 3.6 and libsodium installed to run didery.py. You can find python 3.6 here and libsodium here.
To install didery.py start your virtual environment and run the command below:
$ pip install -e didery.py/
import diderypy.lib as lib
vk, sk, = lib.generating.keyGen()
print(vk)
print(sk)