Native set operations

These set operations have fast, optimized implementations. Other set operations use generic implementations that are often slower.

Construction

Construct set with specific items:

• {item0, ..., itemN}

Construct empty set:

• set()

Construct set from iterable:

• set(x: Iterable)

Set comprehensions:

• {... for ... in ...}

• {... for ... in ... if ...}

Operators

• item in s

Methods

• s.add(item)

• s.remove(item)

• s.discard(item)

• s.update(x: Iterable)

• s.clear()

• s.pop()

Functions

• len(s: set)