tuple

>>> dir(tuple)
['__add__', '__class__', '__class_getitem__', '__contains__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__getnewargs__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__rmul__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'count', 'index']

Dunder methods

Dunder Method	Operation	Example (normal syntax)	Example (dunder call)
__getitem__	Indexing	(1,2,3)[0] → 1	(1,2,3).__getitem__(0)
__len__	Length	len((1,2,3))	(1,2,3).__len__()
__contains__	Membership	2 in (1,2,3)	(1,2,3).__contains__(2)
__add__	Concatenation	(1,2)+(3,4) → (1,2,3,4)	(1,2).__add__((3,4))
__mul__	Repeat	(1,2)*2 → (1,2,1,2)	(1,2).__mul__(2)
__eq__	Equality	(1,2)==(1,2)	(1,2).__eq__((1,2))
__iter__	Iteration	for x in (1,2,3)	(1,2,3).__iter__()