Normally I use R, and often when wanting to make things reproduicible I use sessionInfo(). The reason for this is that I like to let people know what version of everything I am using and what packages I have installed/loaded and what OS I am on etc, so that its quite clear.
sessionInfo returns the version of R, the processor type (e.g. 32/64 bit x86), the operating system, the locale details, and which packages have been loaded.
I am new to python and wondered if there is an equivalent for Python? I'm hoping to use it in an iPython Notebook...