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>>> def foo(cooked, standard):
... print "foo called with cooked: %s, standard: %s" % \
... (cooked, standard) 
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>>> foo('a', 'b')
foo called with cooked: a, standard: b 
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>>> from functools import partial 
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>>> cooked1 = partial(foo, 'cooked_value1') 
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>>> cooked1('value1')
foo called with cooked: cooked_value1, standard: value1
>>> cooked1('value2')
foo called with cooked: cooked_value1, standard: value2
 
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>>> cooked2 = partial(foo, 'cooked_value2')
>>> cooked2('value1')
foo called with cooked: cooked_value2, standard: value1
>>> cooked2('value2')
foo called with cooked: cooked_value2, standard: value2
 
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>>> cooked1('value3')
foo called with cooked: cooked_value1, standard: value3
>>> cooked1('value4')
foo called with cooked: cooked_value1, standard: value4
>>> cooked2('value5')
foo called with cooked: cooked_value2, standard: value5
>>> cooked2('value6')
foo called with cooked: cooked_value2, standard: value6 
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>>> def bar(child_fun, a):
... print "bar called with:", a
... return child_fun(a) 
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