What are some examples of array slicing in Python?

What are some examples of array slicing in Python?

Array slicing in Python allows you to access a subset of elements from a list or array. For example, if you have a list arr = [1, 2, 3, 4, 5], you can slice it like this: arr[1:4] which will return [2, 3, 4].

Can you explain the syntax of array slicing?

Sure! The syntax for array slicing is array[start:stop:step]. Here, start is the index to begin the slice, stop is the index to end the slice (not inclusive), and step is the interval between each index.

What happens if I omit the start or stop values?

If you omit the start value, it defaults to the beginning of the array. If you omit the stop value, it defaults to the end of the array. For example, arr[:3] returns the first three elements, and arr[2:] returns all elements from index 2 to the end.

Can you give me a more complex example?

Absolutely! If you have a list arr = [10, 20, 30, 40, 50, 60], you can use slicing with a step: arr[::2] will return [10, 30, 50], which selects every second element.