def is_filter_tuple(tup):
return isinstance(tup, (tuple, list)) and (<EOL>len(tup) == <NUM_LIT:3> and<EOL>isinstance(tup[<NUM_LIT:0>], string_types) and<EOL>callable(tup[<NUM_LIT:1>]))<EOL>
Return whether a `tuple` matches the format for a column filter