Google Code-in

PEP 8 is a standard style guide for python code. PEP 8 provides a utility called pycodestyle to verify the coding conventions for the Python code. The task is to clean up the source code for test.py (in ns-3 root directory), check-style.py (in utils directory) and create-module.py (in src directory) to follow PEP 8 rules. Update test.py, check-style.py and create-module.py and submit the patch for evaluation.