r2b2.__main__

Entrypoint module, in case you use python -mr2b2.

Why does this file exist, and why __main__? For more info, read:

• https://www.python.org/dev/peps/pep-0338/

• https://docs.python.org/2/using/cmdline.html#cmdoption-m

• https://docs.python.org/3/using/cmdline.html#cmdoption-m