通过调用字典中的值获取嵌套字典中的键

Question

您好，我是python新手，这是我的代码

如果我输入'teacher'（键），输出是类A，但我想要的是当我输入值，即像krinny一样的教师名称时，输出是类B，我如何才能做到这一点

class1 = {
    "class A" : {"teacher" : "simbahan", "Room" : 201 , "Schedule" : "MWF" },
    "class B" : {"teacher" : "krinny", "Room" : 202 , "Schedule" : "TTh" }}

def view2():
    x = input("Enter teacher name: ")
    def findClass(name, class1):
        return next((k for k, v in class1.items() if name in v), None)

    print(findClass(x, class1))
view2()

Answer 1

您可以在字典中检查当前值的值，正如您所知，该值也是一个字典，您可以像这样再次检查它：

def findClass(name, class1):
        return [i for i in class1 if class1[i]['teacher'] == x][0]

注意它将返回一个教师姓名为x的列表

有关更详细的答案：

for i in class1:
    if class1[i]['teacher'] == x:
        return i
    return None

您的最终代码是：

class1 = {
    "class A": {"teacher": "simbahan", "Room": 201, "Schedule": "MWF"},
    "class B": {"teacher": "krinny", "Room": 202, "Schedule": "TTh"}}
def view2():
    x = input("Enter teacher name: ")

    def findClass(name, class1):
        return [i for i in class1 if class1[i]['teacher'] == x][0]
    print(findClass(x, class1))
view2()