Here is the list of what you can command for custom classes:

Symbol	Dunder Method	Description
+a	__pos__(self)	Unary positive
-a	__neg__(self)	Unary negation
~a	__invert__(self)	Bitwise NOT

Symbol	Method	Reflected Method	Description
a + b	__add__	__radd__	Addition
a - b	__sub__	__rsub__	Subtraction
a * b	__mul__	__rmul__	Multiplication
a / b	__truediv__	__rtruediv__	True Division
a // b	__floordiv__	__rfloordiv__	Floor Division
a % b	__mod__	__rmod__	Modulo
a ** b	__pow__	__rpow__	Exponentiation
a << b	__lshift__	__rlshift__	Left bitwise shift
a >> b	__rshift__	__rrshift__	Right bitwise shift
a & b	__and__	__rand__	Bitwise AND
a ⎮ b	__or__	__ror__	Bitwise OR
a ^ b	__xor__	__rxor__	Bitwise XOR

🧙 Reflected methods (__radd__, etc.) are used when the left operand doesn’t know what to do with the right operand’s type. They are called when the left operand does not support the operation and the operands are of different types.

Symbol	Method	Description
==	__eq__	Equal
!=	__ne__	Not Equal
<	__lt__	Less than
<=	__le__	Less than or equal
>	__gt__	Greater than
>=	__ge__	Greater than or equal

Symbol	In-place Method	Description
+=	__iadd__	In-place addition
-=	__isub__	In-place subtraction
*=	__imul__	In-place multiplication
/=	__itruediv__	In-place division
//=	__ifloordiv__	In-place floor division
%=	__imod__	In-place modulo
**=	__ipow__	In-place power
<<=	__ilshift__	In-place left shift
>>=	__irshift__	In-place right shift
&=	__iand__	In-place bitwise AND
│=	__ior__	In-place bitwise OR
^=	__ixor__	In-place bitwise XOR

In-place Methods are used for in-place operations (e.g., a += b). If not defined, Python falls back to the regular method (e.g., add) and assigns the result to the variable.

Syntax.	Method	Description	def
obj()	__call__	Callable object
str(obj)	__str__	User-facing string
repr(obj)	__repr__	Debug/Dev string
len(obj)	__len__	Length (e.g., for containers)
abs(obj)	__abs__	Absolute value
complex(obj)	__complex__	Convert to complex
int(obj)	__int__	Convert to integer
float(obj)	__float__	Convert to float
bool(obj)	__bool__	Convert to boolean
hash(obj)	__hash__	Hash for sets/dicts
obj = Class()	__init__	Initialize the object.

Syntax	Method	Does
round(obj)	__round__	Rounds a numeric object.
math.trunc(obj)	__trunc__	truncate number
math.floor(obj)	__floor__	floor number
math.ceil(obj)	__ceil__	ceil number
.	__index__	used in slicing

Syntax	Method	Description	def
item in obj	__contains__	Membership check (in)
obj[key]	__getitem__	Indexing	def __getitem__(obj, key):
obj[key] = val	__setitem__	Item assignment	def __setitem__(obj, key, val):
del obj[key]	__delitem__	Item deletion	def __delitem__(obj, key):

Syntax	Method	Does
with obj as alias:	__enter__ __exit__	Context Manager
Enter	__enter__
Exit	__exit__	Is guaranteed to run after a successful Enter, including on exceptions

Syntax	Method	Does
for x in obj:	__iter__ __next__
iter(obj)	__iter__	Iterator start
next(obj)	__next__	Iterator step

Syntax	Method	Does
obj.attr	__getattribute__ or else __getattr__	Attribute Access
obj.attr = val	__setattr__	Set attribute
del obj.attr	__delattr__	Delete attribute
access attribute	__get__
assign	__set__
delete	__delete__

Syntax	Method	Does
reversed(obj)	reversed	reverses the order
. length_hint	optimization

Syntax	Method
await obj	__await__
async iterator	__aiter__
async next	__anext__

Syntax	Method
obj[a:b:c]	__getitem__ (with slice)
assignment	__setitem__
deletion	__delitem__

Syntax	Method
if obj:	__bool__
fallback	len

Event	Method
class creation	__new__
subclassing	__init_subclass__
instance check	__instancecheck__
subclass check	__subclasscheck__

Syntax	Method
obj()	__call__
function annotations	__annotations__
signature inspection	__signature__

Syntax	Method
format(obj)	__format__
bytes(obj)	__bytes__