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Convert key-values list to flat dictionary in Python
When it is required to convert a dictionary, that contains pairs of key values into a flat list, dictionary comprehension can be used.
It iterates through the dictionary and zips them using the ‘zip’ method.
The zip method takes iterables, aggregates them into a tuple, and returns it as the result.
Below is a demonstration of the same −
Example
from itertools import product
my_dict = {'month_num' : [1, 2, 3, 4, 5, 6], 'name_of_month' : ['Jan', 'Feb', 'March', 'Apr', 'May', 'June']}
print("The dictionary is : ")
print(my_dict)
my_result = dict(zip(my_dict['month_num'], my_dict['name_of_month']))
print("The flattened dictionary is: ")
print(my_result)Output
The dictionary is :
{'month_num': [1, 2, 3, 4, 5, 6], 'name_of_month': ['Jan', 'Feb', 'March', 'Apr', 'May', 'June']}
The flattened dictionary is:
{1: 'Jan', 2: 'Feb', 3: 'March', 4: 'Apr', 5: 'May', 6: 'June'}Explanation
The required packages are imported into the environment.
A dictionary is defined, and is displayed on the console.
The ‘zip’ method is used to bind the key and value of a dictionary, and it is again converted to a dictionary.
This is assigned to a variable.
It is displayed as output on the console.
Updated on: 14-Apr-2021
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