Nested function calls and missing input parameter, python -

i'm trying out text classification tutorials here:

i don't understand function calls in line 59 -- 65:

#creates feature selection mechanism uses words def make_full_dict(words):     return dict([(word, true) word in words])  #tries using words feature selection mechanism print 'using words features' evaluate_features(make_full_dict) 

shouldn't make_full_dict called string input value words?

without further context, bit difficult give complete answer question. seems evaluate_features method takes function parameter; in case, don't need call function passed in parameter. evaluate_features should that. if call function, return value of function evaluate_features get, rather function itself

if want see function doing, add print statements in make_full_dict method see words passed it