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from dataclasses import dataclass
from datetime import datetime
from typing import Optional
import serde
from common import Benchmark, Methods, Payment
from serde.core import SETTINGS
SETTINGS["debug"] = True
@serde.serde
@dataclass(frozen=True)
class Message:
title: str
body: str
addresses: Optional[list[str]] = None
persistence: Optional[int] = None
@serde.serde
@dataclass(frozen=True)
class Client:
id: int
firstName: str
lastName: str
def __post_init__(self): # The only way I've found to add constraints
if self.id < 0:
raise ValueError
@serde.serde
@dataclass(frozen=True)
class Item:
name: str
price: float
quantity: int = 1
def __post_init__(self):
if self.price < 0 or self.quantity < 1:
raise ValueError
@serde.serde
@dataclass(frozen=True)
class Receipt:
store: str
address: str
date: datetime
items: list[Item]
payment: Payment
client: Optional[Client] = None
specialOffers: Optional[float] = None
def __post_init__(self):
if self.specialOffers is not None and self.specialOffers < 0:
raise ValueError
def methods(cls: type) -> Methods:
return Methods(lambda data: serde.from_dict(cls, data), serde.to_dict)
benchmarks = Benchmark(methods(Message), methods(Receipt), "pyserde")
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