I have come across the following key combinations(...i assume) in vim pymode documentation. <C-c>, <C-C>, <C-X><C-O>, <C-P>/<C-N>. How are they to be interpreted?
<C-c> and <C-C> both mean Ctrl+C.
I'm sure you can infer how to type the others.
See :help key-notation.
Vim pymode: meaning of  key combination