app/liteyuki_flow/typ.py

20 lines
312 B
Python
Executable File

"""
Module docs
"""
from typing import TypeAlias
class Nil():
def __eq__(self, other):
if isinstance(other, Nil):
return True
return other is None
# 不等于
def __ne__(self, other):
return not self.__eq__(other)
nil = Nil()
err: TypeAlias = Exception | Nil