original_docstring:  Returns a dict commit id => set of users 
docstring: Returns a dict commit id => set of users
docstring_tokens: Returns a dict commit id = > set of users
code: def tally(all_votes):
  	""" Returns a dict commit id => set of users """
  	res = collections.defaultdict(set)
  	for v in all_votes:
  		res[v.commit].add(v.user)
  	return res
code_tokens: def tally ( all_votes ) : res = collections . defaultdict ( set ) for v in all_votes : res [ v . commit ] . add ( v . user ) return res
short_docstring: Returns a dict commit id => set of users
short_docstring_tokens: Returns a dict commit id = > set of users
comment: """ Returns a dict commit id => set of users """