What types of data can subset operations be performed on?

In Python, the operation of extracting a subset of elements (slices, indexing) can be performed on the following data types:

• Lists (list) — for example, my_list[1:4] returns elements from the second to the fourth.
• Tuples (tuple) — work the same way as lists but are immutable.
• Strings (str) — a substring can be obtained using slicing, for example, my_str[:5].
• Arrays (array.array) — support slicing.
• Sets (set) — do not support slicing because they are unordered.
• Dictionaries (dict) — do not support slices directly, but subsets of keys or values can be extracted using methods.
• NumPy arrays (numpy.ndarray) — support complex indexing and slicing.

Example of list slicing:

my_list = [10, 20, 30, 40, 50]
subset = my_list[1:4]  # [20, 30, 40]

Thus, the operation of extracting a subset of elements applies to ordered and indexable data types.