Invert a dictionary python

Invert dictionary python

inv_map = {v: k for k, v in my_map.items()}

Source: stackoverflow.com

Invert dictionary python

orig = { 1:'A',  2:'B',  3:'C' }
new = dict(zip(orig.values(), orig.keys()))
new == {'A': 1, 'B': 2, 'C': 3} #True

Invert a dictionary python

d = {'a':1, 'b':2, 'c':3}
inverted_d = {}

for k, v in d.items():
  inverted_d[v] = k

How to reverse a dictionary in python

def inverse_dict(my_dict):
    """
    the func get a dictinary and reverse it, the keys become values and the values become keys.
    :param my_dict: the dictinary that need to be reversed.
    :return: a VERY pretty dictionary.
    """
    result_dict = {}
    for key, value in my_dict.items():
        if not value in result_dict.keys():
            result_dict[value] = []
        result_dict[value].append(key)
    return result_dict, print(result_dict)

Similar codes

8 votes236 views3 answers
Scikit learn roc curve
Python
1 vote236 views1 answer
Delete last message discord.py
Python
0 vote245 views1 answer
Print python setencode
Python
3 votes234 views1 answer
Take array of string in python
Python
3 votes241 views2 answers
Python send get request with headers
Python
0 vote250 views3 answers
How to improve accuracy of random forest classifier
Python
-1 vote274 views1 answer
How to save frames in form of video in opencv python
Python
56 votes258 views5 answers
Python format datetime
Python
0 vote234 views1 answer
Python list all but first
Python
1 vote262 views1 answer
Where my python modules
Python