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Inverting a Dictionary

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David K. answered on August 23, 2020 Popularity 6/10 Helpfulness 4/10

answer Inverting a Dictionary

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Inverting a Dictionary

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my_dict = {
  'Izuku Midoriya': 'One for All', 
  'Katsuki Bakugo': 'Explosion', 
  'All Might': 'One for All', 
  'Ochaco Uraraka': 'Zero Gravity'
}

# Use to invert dictionaries that have unique values
my_inverted_dict = dict(map(reversed, my_dict.items()))

# Use to invert dictionaries that have unique values
my_inverted_dict = {value: key for key, value in my_dict.items()}

# Use to invert dictionaries that have non-unique values
from collections import defaultdict
my_inverted_dict = defaultdict(list)
{my_inverted_dict[v].append(k) for k, v in my_dict.items()}

# Use to invert dictionaries that have non-unique values
my_inverted_dict = dict()
for key, value in my_dict.items(): 
  my_inverted_dict.setdefault(value, list()).append(key)

# Use to invert dictionaries that have lists of values
my_dict = {value: key for key in my_inverted_dict for value in my_inverted_dict[key]}

Popularity 6/10 Helpfulness 4/10 Language python

Source: dev.to

Tags: dictionary python

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Contributed on Sep 30 2022

David K.

0 Answers Avg Quality 2/10

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invert dictionary python

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

Popularity 10/10 Helpfulness 10/10 Language python

Source: stackoverflow.com

Tags: dictionary d

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Contributed on Aug 23 2020

Busy Boar

0 Answers Avg Quality 2/10

invert dictionary python

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

Popularity 9/10 Helpfulness 6/10 Language python

Source: Grepper

Tags: dictionary d

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Contributed on Jan 19 2021

Lovely Lark

0 Answers Avg Quality 2/10

invert a dictionary python

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

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

Popularity 9/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: dictionary d

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Contributed on Feb 06 2022

Awful Alpaca

0 Answers Avg Quality 2/10

# invert a dictionary

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# invert a dictionary
def inv_dict(obj):
  return { value: key for key, value in obj.items() }

d = {'apple':1, 'oranges':2, 'bananas':3}
print(d)
print(inv_dict(d))


# Output:
# {1: 'apple', 2: 'oranges', 3: 'bananas'}

Popularity 7/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: dictionary python

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Contributed on Mar 30 2022

Impossible Impala

0 Answers Avg Quality 2/10

python invert a dictionary

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def invert_dict(my_dict):
    inv_map = {}
    for key, value in my_dict.items():
        inv_map.setdefault(value, []).append(key)
    return inv_map

# Example usage:
my_dict = {'a': 1, 'b': 2, 'c': 1, 'd': 3}
inverted_dict = invert_dict(my_dict)
print(inverted_dict)

Popularity 1/10 Helpfulness 1/10 Language python

Source: Grepper

Tags: dictionary python

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Contributed on Jun 18 2024

HydroBrodo

0 Answers Avg Quality 2/10

Inverting a Dictionary

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