Question

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check if all elements in a list are identical

I want to check if all of the elements of a list are equal. I couldn’t do this with:

if all (x == x for x in (a, b, c, d)):
    ...

Is there very minimalistic and elegant way to do this in Python?

Answer 1

If you have only hashable elements in your list you can use a set.

For example if your list is named lst you can do:

if (len(set(lst)) <= 1):
    ....

The set will eliminate all the duplicates in your list, so if the length of the set is 1 it means that all the elements are the same.