超出Python范围

Question

在python中输入数组

 def insurer_filter(request, name):
     insname = InsName.objects.filter(name = name)
     ins_name = Development.objects.filter(insurer = insname)
     return render(request, 'insurer_filter.html', context = ins_name)

Answer 1

当在python中分配给特定索引的数组时，该索引应该已经存在。如果要向数组添加元素，可以使用append。

看这个简单的例子：

Home = ["AAA"] // array with 1 element only (index 0)
Home[1] = "BBB" // will fails because index 1 not define
Home.append("CCC")
Home[1] = "BBB" // works

Answer 2

您应该使用append方法将元素添加到列表中。

//throws error
Home = []
Home[1] = input("How many points did the Rangers score in quarter 2?: ")

//works
Home = [] 
Home.append(input("How many points did the Rangers score in quarter 2?: "))