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Python | reversed method

schedule Aug 12, 2023
Last updated
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Python's reversed(~) method returns a reverse iterator from the input sequence.

Parameters

1. seq | sequence

The sequence to return the reverse iterator for.

Return value

Returns a reverse iterator from the input sequence.

Examples

Basic usage

To return a reverse iterator and create a list based off of it:

list(reversed('Hello'))
['o', 'l', 'l', 'e', 'H']

reversed('Hello') returns a reverse iterator which we in turn pass as input to list(~) to generate a list from it.

To return a reverse iterator and print each item:

a = ['Apple', 'Pineapple', 'Mango', 'Pear']
reverse_iterator = reversed(a)
for element in reverse_iterator:
print(element)
Pear
Mango
Pineapple
Apple

We return a reverse iterator from reversed(a) and store it to reverse_iterator. We then proceed to loop through each element in reverse_iterator and print it. Notice that we print the elements in the original list a in reverse order.

robocat
Published by Arthur Yanagisawa
Edited by 0 others
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