Is there a way to know if the lists inside a list contain the same elements with python?

For example:

Return True if given list [['A', 'B'], ['A', 'B'], ['A', 'B']] or False if given list [['B', 'C'], ['Z', 'C']]

You can write a loop that looks at each element, one at a time, and sees if it appears as any other element in the array.

To see if all entries in a list are unique you could do

def unique(lst):
    d = []
    for l in lst:
        if not l in d:
            d.append(l)
    return len(d) == len(l)

This will check if all items are unique. If you want to see if all items are the same then check for length of one. For non-nested lists you would typically use a set but lists are not hashable so I'd use a loop. There may be a more pythony way of doing this but I'm not a python pro.

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