reverse dictionary key value python

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showing results for - "reverse dictionary key value python"
Federico
05 Nov 2016
1inv_map = {v: k for k, v in my_map.items()}
2
source
Frank
16 May 2019
1# Python3 using reversed() + items()  
2test_dict = {'Hello' : 4, 'to' : 2, 'you' : 5}
3
4rev_dict = dict(reversed(list(test_dict.items()))) # Reversing the dictionary
5
6print("The original dictionary : " + str(test_dict))
7print("The reversed order dictionary : " + str(rev_dict)) 
8
9# Output:
10"The original dictionary : {'Hello': 4, 'to': 2, 'you': 5}"
11"The reversed order dictionary : {'you': 5, 'to': 2, 'Hello': 4}"
source
Alexa
14 May 2017
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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