django：类型错误：“元组”对象不可调用

Question

出现类型错误，“元组”对象不可调用。知道它可能是什么吗？ （不要担心缩进。它复制得很奇怪。）我正在尝试根据 storeliquor 的 PackSize 创建选择。

Views.py：

def storeliquor(request, store_id, liquor_id):        
a = StoreLiquor.objects.get(StoreLiquorID=liquor_id)
s = Store.objects.get(StoreID=store_id)
x = Order.objects.get(storeID=s, Active=True)
y = a.OffPremisePrice
c = a.BottleSize

g = request.POST.get('OrderAmount', '')
b = a.PackSize
h = b*2
d = b*3
e = b*4
r = b*5
if c == "1750 ML":
    pack_size = (
        ('1', '1')
        ('3', '3')
        (b, b)
        (h, h)
        (d, d)
        (e, e)
        (r, r)
    )
elif c == "1000 ML":
    pack_size = (
        ('1', '1')
        ('3', '3')
        ('6', '6')
        (b, b)
        (h, h)
        (d, d)
        (e, e)
        (r, r)
    )
elif c == "750 ML":
    pack_size = (
        ('1', '1')
        ('3', '3')
        ('6', '6')
        (b, b)
        (h, h)
        (c, d)
        (e, e)
        (r, r)
    )     
elif c == "375 ML":
    pack_size = (
        ('3', '3')
        ('6', '6')
        ('12', '12')
        (b, b)
        (h, h)
        (d, d)
        (e, e)
        (r, r)
    )        
elif c == "200 ML":
    pack_size = (
        ('12', '24')
        ('24', '24')
        (b, b)
        (c, c)
        (c, d)
        (e, e)
        (r, r)
    ) 
else:
    pack_size = (
        (b, b)
        (c, c)
        (c, d)
        (e, e)
        (r, r)
    )        




if request.method == "POST":
    f = AddToOrderForm(request.POST)

    if f.is_valid():
        z = f.save(commit=False)
        z.TotalPrice = (float(y)) * (float(g))
        z.storeliquorID = a
        z.orderID = x

        z.save()        

    return HttpResponseRedirect('/stores/get/%s' % store_id)

else:
    f = AddToOrderForm()
    f.fields['OrderAmount'].choices = pack_size      
args = {}


args['liquor'] = a
args['s'] = s
args['form'] = f   

return render(request,'storeliquor.html', args)

模型文件：

class LiquorOrder(models.Model):

LiquorOrderID = models.AutoField(primary_key=True)
storeliquorID = models.ForeignKey(StoreLiquor)
orderID = models.ForeignKey(Order)
OrderAmount = models.CharField('Order Amount', max_length=3)
TotalPrice = models.DecimalField('Total Price', max_digits=5, decimal_places=2)
StorePrice = models.DecimalField('Store Price', max_digits=5, decimal_places=2)

表格文件：

class AddToOrderForm(forms.ModelForm):

class Meta:
    model = LiquorOrder
    fields = ('OrderAmount', 'StorePrice')

Answer 1

您缺少逗号 (

,

)：

>>> ((1,2) (2,3))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object is not callable

输入逗号：

>>> ((1,2), (2,3))
((1, 2), (2, 3))

Answer 2

您的元组中缺少逗号。

在元组之间插入逗号 如图：

pack_size = (('1', '1'),('3', '3'),(b, b),(h, h),(d, d),   (e, e),(r, r))

对所有人都做同样的事情

Answer 3

元组需要在值之间使用逗号，如下所示：

myTuple = (("a", "b"), (1, 2))
               ↑     ↑   ↑
           # Commas are needed

另外，下面这个是元组类型：

myTuple = (("a", "b"))

下面这些也是元组类型：

myTuple = (("a",))

myTuple = (("a"),)

myTuple = (("a",),)

myTuple = ((),)

myTuple = (())

但是，下面这个不是Tuple。下面这个是String类型:

myTuple = (("a"))

下面会导致错误：

myTuple = ((,))

Answer 4

---

TypeError Traceback（最近一次调用最后一次） [69] 中的单元格，第 5 行 2 tuple2 = ('python', '极客') 4 # 连接上面两个 ----> 5 print(tuple1 + tuple2)

类型错误：“元组”对象不可调用