Question: I dont understand 0 pls explain in details. a_list = [4,5,6,2,3, 4,5, 6] a_list . append (9) a_list . extend ( [3, 4]) print (len(a_list))

I dont understand 0 pls explain in details. a_list = [4,5,6,2,3, 4,5, 6] a_list . append (9) a_list . extend ( [3, 4]) print (len(a_list)) print (a_list . index (4) ) 11 0

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