How can I reverse a list in Python?

Question

How can I do the following in Python?

array = [0, 10, 20, 40]

for (i = array.length() - 1; i >= 0; i--)

I need to have the elements of an array, but from the end to the beginning.

Answer 1

Actually, to reverse any list in Python we have many ways and many efficient ways than other languages:-

The first thing you can use the reverse function which is in build function to reverse any data types in Python:-

array=[0,10,20,40] 

for i in reversed(array):

print(i)

Important point to note is, the reversed() function does not return a list. Do get a reversed key you can use list(reversed(array)).

array=[0,10,20,40] 

print(list(reversed(array))

The second method to do this problem which makes Python unique and best at the work compared to other language is by using the slice method:-

L = [0,10,20,40] 

L[::-1] 

To know more about this you can have a look at the following video tutorial:-

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