python3-ply software package provides Lex and Yacc implementation for Python3, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install python3-ply
python3-ply is installed in your system.
Make ensure the python3-ply package were installed using the commands given below,
$ sudo dpkg-query -l | grep python3-ply *
You will get with python3-ply package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Python |
| Package | python3-ply |
| Version | 3.4-3ubuntu2 |
| Description | Lex and Yacc implementation for Python3 |
| Sub Section | Python |