What is the Time Complexity of Python\'s `len()` Function?

Computational Complexity of the len() Function

The len() function is a fundamental Python built-in that calculates the length or size of various data structures. Understanding its computational complexity is crucial for optimizing code efficiency.Constant Time Complexity (O(1))

Surprisingly, Python's The len() function always has O(1) computational complexity for lists, tuples, strings, and dictionaries. That is, getting the length of these data structures is done in constant time, regardless of the actual number of elements.

This incredible speed is due to the fact that these data structures track length internally. This means that the len() function can directly reference the stored length rather than calculating it.

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