I\'ve got a list (used as a stack) of numpy arrays. Now I want to check if an array is already in the list. Had it been tuples for instance, I would simply have written some
Sven's answer is the right choice if you want to compare the actual content of the arrays. If you only want to check if the same instance is contained in the list you can use
any(a is x for x in mylist)
One benefit is that this will work for all kinds of objects.