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models.py
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models.py
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from numbers import Number
from dataclasses import dataclass
@dataclass(frozen=True)
class User:
id: int
username: str
first_name: str
last_name: str
size: Number
def __hash__(self):
return hash((self.id, self.username, self.first_name, self.last_name))
def __eq__(self, other):
if isinstance(other, str):
return hash(self.username) == hash(other)
return hash(self) == hash(other)
@dataclass(frozen=True)
class Relation:
from_user: User
to_user: User
exchange: Number
def __hash__(self):
return hash(self.from_user) & hash(self.to_user)
def __eq__(self, other):
return hash(self) == hash(other)
def __contains__(self, item):
return item == self.from_user or item == self.to_user