Question

我有一个初始end_date的表单。我有一个价值错误，因为今年是闰年，我们目前是二月。

我的代码的结束日为30，但我无法弄清楚如何编写代码，以便发现它是否为闰年并将初始end_date设置为2月的正确最后一天。

这是我控制end_date初始值的forms.py

class MaturityLetterSetupForm(forms.Form):
def __init__(self, *args, **kwargs):
    from datetime import datetime
    today = datetime.today()
    start_year = today.year
    start_month = today.month
    start_date = datetime(start_year, start_month, 1)
    try:
        end_date = datetime(start_year, start_month, 30)
    except ValueError:
        end_date = datetime(start_year, start_month, ?)

    super(MaturityLetterSetupForm, self).__init__(*args, **kwargs)
    self.fields['start_date'] = forms.DateField(initial=start_date.strftime("%B %d, %Y"),
        widget=forms.TextInput(attrs={'class':'datepicker', 'value': today }))

    self.fields['end_date'] = forms.DateField(initial=end_date.strftime("%B %d, %Y"),
        widget=forms.TextInput(attrs={'class':'datepicker', 'value': today }))

修改与@Paul交谈后我的初始化成了：

def __init__(self, *args, **kwargs):
    from datetime import datetime
    import calendar
    today = datetime.today()
    start_year = today.year
    start_month = today.month
    start_date = datetime(start_year, start_month, 1)
    if calendar.isleap(start_year) and today.month == 2:
        end_date = datetime(start_year, start_month, calendar.mdays[today.month]+1)
    else:
        end_date = datetime(start_year, start_month, calendar.mdays[today.month])
    super(MaturityLetterSetupForm, self).__init__(*args, **kwargs)
    self.fields['start_date'] = forms.DateField(initial=start_date.strftime("%B %d, %Y"),
        widget=forms.TextInput(attrs={'class':'datepicker', 'value': today }))

    self.fields['end_date'] = forms.DateField(initial=end_date.strftime("%B %d, %Y"),
        widget=forms.TextInput(attrs={'class':'datepicker', 'value': today }))

找到当月的最后一天。

Answer 1

calendar.isleap(year)怎么样？

另外，不要使用try / except来处理此问题，而应使用if条件。类似的东西：

if calendar.isleap(year):
    do_stuff
else:
   do_other_stuff

找出它是否是闰年并相应地设定

1 个答案: