invert dictionary python
inv_map = {v: k for k, v in my_map.items()}invert dictionary python
inv_map = {v: k for k, v in my_map.items()}reverse key order dict python
>>> a = {0:'000000',1:'11111',3:'333333',4:'444444'}
>>> a.keys()
[0, 1, 3, 4]
>>> sorted(a.keys())
[0, 1, 3, 4]
>>> reversed(sorted(a.keys()))
<listreverseiterator object at 0x02B0DB70>
>>> list(reversed(sorted(a.keys())))
[4, 3, 1, 0]invert dictionary python
orig = { 1:'A', 2:'B', 3:'C' }
new = dict(zip(orig.values(), orig.keys()))
new == {'A': 1, 'B': 2, 'C': 3} #Truehow 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)reverse python dictionary
inv_map = {v: k for k, v in my_map.iteritems()}Copyright © 2021 Codeinu
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