Record Similar tuple occurrences in Python

PythonServer Side ProgrammingProgramming

When it is required to record similar tuple occurrences, the 'map' method, the 'Counter' method and the 'sorted' method can be used.

A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on). A list of tuple basically contains tuples enclosed in a list.

The map function applies a given function/operation to every item in an iterable (such as list, tuple). It returns a list as the result.

The 'sorted' method is used to sort the elements of a list.

The 'Counter' is a sub-class that helps count hashable objects, i.e it creates a hash table on its own (of an iterable- like a list, tuple, and so on) when it is invoked.

It returns an itertool for all of the elements with a non-zero value as the count.

Below is a demonstration of the same −

Example

Live Demo

from collections import Counter
my_list_1 = [(11, 14), (0, 78), (33, 67), (89, 0)]

print("The list of tuple is : ")
print(my_list_1)

my_result = dict(Counter(tuple(elem) for elem in map(sorted, my_list_1)))
print("The frequency of like tuples is : ")
print(my_result)

Output

The list of tuple is :
[(11, 14), (0, 78), (33, 67), (89, 0)]
The frequency of like tuples is :
{(11, 14): 1, (0, 78): 1, (33, 67): 1, (0, 89): 1}

Explanation

The required packages are imported.

  • A list of tuple is defined and is displayed on the console.
  • The 'Counter' method is used on this list of tuple, and it is applied to every element using the 'map' method.
  • This is then converted into a dictionary.
  • This output is assigned to a value.
  • It is displayed on the console.
raja
Published on 12-Mar-2021 05:49:17
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