How do I check if a sublist in a 2D list is in a list?

Question

I have two lists:

my_list = [1,2,3,4,5]

my_new_list = [[1,3,7,5],[1,2,3,4,5]]

How can I check that a sublist equals my_list?

Answer 1

If you want to check if my_list is in the my_new_list just use in:

>>> my_list in my_new_list
True

If you want to know the index of the matching list you can use index:

>>> my_new_list.index(my_list)
1 

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If you think these are too efficient, too easy or too short you can do it manually as well:

>>> any(sublist == my_list for sublist in my_new_list) # equivalent to "in"
True

>>> next(idx for idx, sublist in enumerate(my_new_list) if sublist == my_list)  # like "index".
1

Answer 2

You can index built-in function

>>> my_new_list.index(my_list)
1

Or you can use in :

>>> my_list in my_new_list
True

You can also use magic function contains

>>> my_new_list.__contains__(my_list)
True