bytearray

>>> dir(bytearray)
['__add__', '__alloc__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mod__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__rmod__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'append', 'capitalize', 'center', 'clear', 'copy', 'count', 'decode', 'endswith', 'expandtabs', 'extend', 'find', 'fromhex', 'hex', 'index', 'insert', 'isalnum', 'isalpha', 'isascii', 'isdigit', 'islower', 'isspace', 'istitle', 'isupper', 'join', 'ljust', 'lower', 'lstrip', 'maketrans', 'partition', 'pop', 'remove', 'removeprefix', 'removesuffix', 'replace', 'reverse', 'rfind', 'rindex', 'rjust', 'rpartition', 'rsplit', 'rstrip', 'split', 'splitlines', 'startswith', 'strip', 'swapcase', 'title', 'translate', 'upper', 'zfill']

Dunder methods

Dunder Method	Operation	Example (normal syntax)	Example (dunder call)
__getitem__	Indexing	b'abc'[1] → 98	b'abc'.__getitem__(1)
__len__	Length	len(b'abc') → 3	b'abc'.__len__()
__contains__	Membership	97 in b'abc' → True	b'abc'.__contains__(97)
__add__	Concatenation	b'hi' + b'!' → b'hi!'	b'hi'.__add__(b'!')
__mul__	Repeat	b'hi' * 2 → b'hihi'	b'hi'.__mul__(2)