How to avoid computation every time a python module is reloaded

Question

I have a python module that makes use of a huge dictionary global variable, currently I put the computation code in the top section, every first time import or reload of the mod

Answer 1

1. Factor the computationally intensive part into a separate module. Then at least on reload, you won't have to wait.

2. Try dumping the data structure using protocol 2. The command to try would be cPickle.dump(FD, protocol=2). From the docstring for cPickle.Pickler:

   Protocol 0 is the
   only protocol that can be written to a file opened in text
   mode and read back successfully.  When using a protocol higher
   than 0, make sure the file is opened in binary mode, both when
   pickling and unpickling.