属性错误：“str”对象没有属性“n”；使用 dateutil 时
我正在使用 dateutil rrule 函数..我从 django 中的数据模型中获取工作日。当我将它放入像这样的 rrule 函数中时
for x in lgs:
teams = Team.objects.filter(league=x.id)
teamcount = len(teams)
playdays = "rrule." + str(x.play_days)
fixdays = rrule.rrule(rrule.DAILY,byweekday = (playdays),dtstart=startdate,until=endate)
print list(fixdays)
Traceback (most recent call last):
File "<console>", line 5, in <module>
File "/usr/lib/pymodules/python2.7/dateutil/rrule.py", line 345, in __init__
elif not wday.n or freq > MONTHLY:
AttributeError: 'str' object has no attribute 'n'
，如果我正常使用该函数，并将第 5 行替换为
fixdays = rrule.rrule(rrule.DAILY,byweekday = (rrule.SU, rrule.MO),dtstart=startdate,until=endate)
i 就没有问题了。可能出了什么问题。
I am using dateutil rrule function .. i get the weekdays from my data model in django. when i put it in rrule function like this
for x in lgs:
teams = Team.objects.filter(league=x.id)
teamcount = len(teams)
playdays = "rrule." + str(x.play_days)
fixdays = rrule.rrule(rrule.DAILY,byweekday = (playdays),dtstart=startdate,until=endate)
print list(fixdays)
Traceback (most recent call last):
File "<console>", line 5, in <module>
File "/usr/lib/pymodules/python2.7/dateutil/rrule.py", line 345, in __init__
elif not wday.n or freq > MONTHLY:
AttributeError: 'str' object has no attribute 'n'
if i use the function normally, and replace line 5 with
fixdays = rrule.rrule(rrule.DAILY,byweekday = (rrule.SU, rrule.MO),dtstart=startdate,until=endate)
i get no problem. what could be wrong.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
是
dateutil.rrule.weekday对象的列表（元组），而是一个字符串（不具有
.n属性）。您可以定义一个字典：
，然后调用它：
另外，请记住，这
相同，请添加逗号：
与如果要从单个元素定义元组
is a list (tuple) of
dateutil.rrule.weekdayobjects, whileis a string (that does not have the
.nattribute).You could define a dictionary:
and then call it:
Also, remember that
is the same as
If you want to define a tuple from single element, add comma:
“规则。” + str(x.play_days) 返回一个字符串，而不是具有该名称的变量，而在您的硬编码示例中，您传递了一组变量
您可能想做这样的事情：
然后将 playdays 传递给 byweekday（不带括号），比如byweekday=playdays，......
正如 eumiro 在他的回答中所说，这是没有必要的:)
"rrule." + str(x.play_days) returns a string not the variable with that name, while in your hardcoded example you're passing a set of variables
You probably want to do something like this instead:
and then pass playdays to byweekday without the brackets, like byweekday=playdays, .....
as eumiro said in his answer it's not necessary :)