Python – Ordered tuples extraction

When it is required to extract ordered tuples, a list comprehension, the ‘sorted’ method, the ‘tuple’ method and the ‘==’ operator is used.

Example

Below is a demonstration of the same −

my_list = [(15, 74, 36, 22, 54), (13, 24, 56), (59, 60, 34), (42,65, 56), (99, 91)]

print("The list is :")
print(my_list)

my_result = [element for element in my_list if tuple(sorted(element)) == element]

print("The result is :")
print(my_result)

Output

The list is :
[(15, 74, 36, 22, 54), (13, 24, 56), (59, 60, 34), (42, 65, 56), (99, 91)]
The result is :
[(13, 24, 56)]

Explanation

• A list of integers is defined and is displayed on the console.

• A list comprehension is used to iterate over the list, and every element is sorted and converted to a tuple and compared to the element.

• If they are equal, it is converted to a list, and is assigned to a variable.

• This is the output that is displayed on the console.