cython3 software package provides C-Extensions for Python 3, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cython3
cython3 is installed in your system.
Make ensure the cython3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep cython3 *
You will get with cython3 package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Python |
| Package | cython3 |
| Version | 0.24.1-2 |
| Description | C-Extensions for Python 3 |
| Sub Section | Python |