首先粘贴代码： shopping={} key1=input('请输入要存入的商品名称：') value1=input('请输入商品的金额（数字）：') if value1.isdigit(): value1=int(value1) shopping[key1]=value1 for i in shopping: print(i,shopping[i]) ...

One of the features that makes Python a great programming language is exceptions for error handling. Exceptions are convenient in many ways for handling errors and ...