Mnaveau/python3

[MaximilienNaveau]

Description

Related to this issue: https://github.com/machines-in-motion/dynamic_graph_manager/issues/20 I implemented the needed requirement for the python3 compatibility.

This PR still lacks:

• [x] Nosetests
• [ ] Python code formatting
• [ ] Under the hood documentation of the different mechanism for expert and developers on this project.

How I Tested

I executed some demos on my laptop... I need more unit-tests for python2/3 compatibility.

Do not merge before

• [x] https://github.com/machines-in-motion/dynamic_graph_manager/pull/19

I fulfilled the following requirements

• [ ] All new code is formatted according to our style guide (for C++ run clang-format, for Python, run flake8 and fix all warnings).
• [x] All new functions/classes are documented and existing documentation is updated according to changes.
• [x] No commented code from testing/debugging is kept (unless there is a good reason to keep it).

[vincentberenz]

@MaximilienNaveau I'll be on holiday from today, but happy to review as soon I am back (in a week)

[MaximilienNaveau]

@vincentberenz Ok no problem, I will continue a bit on this branch to add unit-tests. These are absolutely lacking in Python so I will build nosetests about the user interface.