please can i get help on this problem

Sat Dec 26 06:36:55 EST 2015

Create a function manipulate_data that does the following
Accepts as the first parameter a string specifying the data structure to be used "list", "set" or "dictionary"
Accepts as the second parameter the data to be manipulated based on the data structure specified e.g [1, 4, 9, 16, 25] for a list data structure
Based off the first parameter
 return the reverse of a list or
 add items `"ANDELA"`, `"TIA"` and `"AFRICA"` to the set and return the resulting set
 return the keys of a dictionary.
here is my work, but i dont know what i ave done wrong:
def manipulate_data(list_data, set_data):
 if list_data == ["apples", "orange", "mangoes"]:
 for set_data in reversed(set_data):
 return set_data
 elif manipulate_data(list_data == {"apples", "orange", "mangoes"}):
 list_data.append("ANDELA", "TIA", "AFRICA")
 for set_data in list_data:
 return set_data
 if manipulate_data(list_data == {"apples": 23, "oranges": 15, "mangoes": 3, "grapes": 45}):
 return list_data.keys()