我有以下(简化的)模型和工厂:
模型.py
class Event():
duration = FloatField()
start_time = TimeField()
finish_time = DateTimeField()
def save(self, *args, **kwargs):
self.finish_time = self.start_time + timedelta(hours=self.duration)
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事件工厂.py
from factory import Faker
class EventFactory:
date = Faker(
"date_time_this_month",
before_now=False,
after_now=True,
tzinfo=timezone.get_current_timezone(),
)
start_time = Faker("time_object")
duration = Faker("random_int")
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但是,我的save方法提出了Warning: DateTimeField Event.finish_time received a naive datetime (2022-03-28 12:43:38) while time zone support is active.
date由于参数而知道tzinfo,但start_time很天真(我用 django 检查过timezone.is_aware()),因为 Faker 中的时间提供程序似乎不允许任何时区参数。
关于在 Factory-boy/Faker 中获取假感知时间对象有什么建议吗?
我有一本字典。
prices = {'n': 99, 'a': 99, 'c': 147}
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使用map()我需要接收新的字典:
def formula(value):
value = value -value * 0.05
return value
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new_prices = dict(map(formula, prices.values()))
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但它不起作用
TypeError: cannot convert dictionary update sequence element #0 to a sequence
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使用以下方法解决我的代码map():
new_prices = {'n': 94.05, 'a': 94.05, 'c': 139.65}
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