What are the differences between an immutable set and a fixed list in Python?

In Python, an immutable set (frozenset) and a fixed list (tuple) differ in the following aspects:

• Collection type: frozenset is a set, meaning an unordered collection of unique elements. tuple is an ordered, immutable list of elements.

• Uniqueness of elements: In frozenset, all elements are unique, duplicates are automatically removed. In tuple, duplicates are preserved.

• Order of elements: In tuple, the order of elements is fixed and important. In frozenset, the order is not guaranteed.

• Usage: frozenset is often used when a set that cannot be changed is needed (e.g., as a key in a dictionary). tuple is used for storing fixed sequences of elements where order matters.

Example:

fs = frozenset([1, 2, 2, 3])  # frozenset({1, 2, 3})
t = (1, 2, 2, 3)              # (1, 2, 2, 3)

print(fs)  # order is not guaranteed
print(t)   # order is preserved