using python!!

Write a function reverseDict() that takes accepts one argument, a dictionary. The function constructs and returns the reversed dictionary. You may assume that all keys and values are unique. Sample runs:

>>> reverseDict( {'a':1,'b':2,'c':3}) {1: 'a', 2: 'b', 3: 'c'} >>> reverseDict( {1:'apple', 2:'pear', 3:'orange'} ) {'orange': 3, 'apple': 1, 'pear': 2}