how to reverse a dictionary in python

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Fabio
01 Oct 2020
1inv_map = {v: k for k, v in my_map.items()}
source
Nicole
24 Apr 2016
1def inverse_dict(my_dict):
2    """
3    the func get a dictinary and reverse it, the keys become values and the values become keys.
4    :param my_dict: the dictinary that need to be reversed.
5    :return: a VERY pretty dictionary.
6    """
7    result_dict = {}
8    for key, value in my_dict.items():
9        if not value in result_dict.keys():
10            result_dict[value] = []
11        result_dict[value].append(key)
12    return result_dict, print(result_dict)
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Elias
29 Jan 2017
1inv_map = {v: k for k, v in my_map.iteritems()}
2
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