Codingbat is unable to pass a dictionary as a parameter. It can, however, pass a list as a parameter. A dictionary is just a mapping from keys to values, so it's the same information as a list of pairs

[[key1,value1],[key2,value2],...]

Write a function

 list2dict(mappings) 

that takes as parameter a list of mappings like the above, and computes the corresponding dictionary, D. Then, because codingbat also can't return a dictionary, you must return [D], i.e. a one-element list containing D. Note that the items of mappings are themselves lists, and each mapping in mappings contains a key = mapping[0], and a value = mapping[1]