How to sort with lambda in Python Programming?

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Aryan Kumar · Answer

Sure, I can help you with that.

To sort with lambda in Python programming, you can use the sorted() function. The sorted() function takes a list as its argument and returns a new list that is sorted according to the specified criteria. The criteria can be specified using a lambda expression.

The syntax for the sorted() function is as follows:

Python

sorted(list, key=lambda x: x[key])

list: The list to be sorted.
key: A lambda expression that specifies the criteria for sorting. The lambda expression takes an element from the list as its input and returns a value that will be used to sort the element.

The following code sorts a list of names in ascending order by their first letter:

Python

names = ["John", "Jane", "Peter"]

sorted_names = sorted(names, key=lambda name: name[0])

print(sorted_names)

In this code, the sorted() function takes the names list as its argument and returns a new list that is sorted by the first letter of each name. The lambda expression takes a name as its input and returns the first letter of the name.

The sorted() function can also be used to sort a list of numbers. The following code sorts a list of numbers in ascending order:

Python

numbers = [10, 5, 20]

sorted_numbers = sorted(numbers, key=lambda number: number)

print(sorted_numbers)

In this code, the sorted() function takes the numbers list as its argument and returns a new list that is sorted by the numbers. The lambda expression takes a number as its input and returns the number itself.

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How to sort with lambda in Python Programming?

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