[python2] Ignore *.pyc files
Revert "CDA script: convert print statements to functions" (had to resolve conflict manually)

This reverts commit 566ddffb08d7b33fa40f44b621ce2fd2c8748992.

Conflicts:

	src/scripts/cda
Revert "Use python3 in shebang as per PEP 394"

This reverts commit 19555bbdbea5a03f89ca4937c178ae79cab9a0f8.
Revert "Use python3 in shebang as per PEP 394"

This reverts commit 85dbbaa2c913b2fee5f7d124337646e25906992e.
[python2] Use python2 in shebangs as per PEP 394