emacs python mode from scratch: stage 16 - completion

This is a collection of functions that uses emacs.py to find a list of likely completions for module.

python-imports
python-find-imports
python-symbol-completions
python-partial-symbol 
python-complete-symbol
python-try-complete

• python-imports
  

  A list of python import statements in the buffer
  

• python-find-imports
  

  Populate the above list. search by looking for "^import" or "^from" (skipping those in comments or strings).
  

  Then reverse the list, clean out text properties and change \n to \\n so that output doesn't end up wrong.
  

• python-symbol-completions
  

  Run emacs.complete(symbol, python-imports) and return the list of completions (in another buffer)
  

• python-partial-symbol
  

  Use a regular expression to go backward and thereby find the complete symbol before point. This seems a little odd to me. I seems like it would be easier to just trust the syntax-table that has already been defined for the mode and just do backward-word from the current position (with a save-excursion). As a guess I'd say it's so that it can treat "." as part of the symbol and skip over that to the beginning of a module/class name.
  

• python-complete-symbol
  

  Find the list of completions (using python-symbol-completions) or just scroll the completions window if they've already been found.
  

• python-try-complete
  

  "hippie-expand" version for doing symbol completions. Basically "he-" does all the heavy lifting hereit just needs to be
  given the python-symbol-completions and python-partial-symbol functions.