What is Negative Index in Python?
What is Negative Index in Python?
Negative indexing in Python is a feature that allows you to access elements from the end of a sequence, such as a list, tuple, or string, using negative integers as indexes. This method of indexing is particularly useful for directly accessing the last elements of a sequence without needing to know the length of the sequence.
In Python, the index of -1 refers to the last element, -2 to the second last, and so on. For example, if you have a list my_list =
, my_list[-1]
would return 50, and my_list[-2]
would return 40[1][2][3][4].
Negative indexing is beneficial because it simplifies the code and makes it easier to quickly refer to elements at the end of a sequence. It eliminates the need for additional functions or methods to determine the length of the sequence before accessing its elements. This can lead to more readable and efficient code, especially in scenarios where operations on the end elements of a sequence are frequent[1][2][3][4].
Moreover, negative indexing is not just limited to accessing indi...
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