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"""
categories: Core,Classes
description: When inheriting native types, calling a method in ``__init__(self, ...)`` before ``super().__init__()`` raises an ``AttributeError`` (or segfaults if ``MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG`` is not enabled).
cause: MicroPython does not have separate ``__new__`` and ``__init__`` methods in native types.
workaround: Call ``super().__init__()`` first.
"""
class L1(list):
def __init__(self, a):
self.append(a)
try:
L1(1)
print("OK")
except AttributeError:
print("AttributeError")
class L2(list):
def __init__(self, a):
super().__init__()
self.append(a)
try:
L2(1)
print("OK")
except AttributeError:
print("AttributeError")
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