学python的书里面有这么一段代码：
responses = { }
#设置标志
polling_active = True
while polling_active:
    name = input("\nwhat is your name ")
    response = input("\nwhich mountain would you  like to climb someday ")
    responses[name] = response
    repeat = input("\nwould you like to ler another person respond? (yes/no)")
    if repeat == 'no':
        polling_active = False

print("\n ------Polling Result-----")
for name,response in responses.items():
    print(name + " would like to climb " + response + ".")
    responses[name] = response
这段代码原书中写的是#将答案存储在字典中
一开始没有搞懂这个含义，为什么要这么写，后来明白了：
 responses（字典）⬅ 存储⬅ [name]（键值）⬅   = （赋值）⬅response（value 值）
这句话要从右往左理解，通过将response获得的输入值，赋值到responses字典的name键值上，所以是这么写的！
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