Question

只是为学校制作一个程序，我一直在“set intRnumber”部分得到一个无效的语法。有人可以帮忙吗？

StrName = ""
StrLevel = ""
intRnumber = 0

StrName = input("What's your name? ")
print("Hello,", StrName)



StrLevel = input("Would you like a low, medium, or high random number? ")
if StrLevel == "low":
    set intRnumber == "5"
elif StrLevel == "medium":
    set intRnumber == "50"
elif StrLevel == "high":
    set intRnumber == "500"
else:
    print("Invalid input, please input low, medium, or high!")

Answer 1

在python中，你没有像你想要的那样执行assignment。

你需要这样做：

set variable == value

而不是

StrLevel = input("Would you like a low, medium, or high random number? ")
if StrLevel == "low":
    intRnumber = "5"
elif StrLevel == "medium":
    intRnumber = "50"
elif StrLevel == "high":
    intRnumber = "500"
else:
    print("Invalid input, please input low, medium, or high!")

您在代码的前几行中拥有它，但代码的最后一部分需要更改为：

public partial class UsersViewModel : INotifyPropertyChanged
{
    public RelayCommand<UserViewModel> editButton_Click_Command { get; set; }

    public UsersViewModel()
    {
        editButton_Click_Command = new RelayCommand<UserViewModel>(OneditButton_Click_Command);

        this.Users = new ObservableCollection<UserViewModel>();

        this.Users.Add(new UserViewModel() { FirstName = "John", LastName = "Doe", EMail = "JohnDoe@yahoo.com", EndDate = new DateTime(2016,2,1), Position = "Developer", UserID = 0 });
    }

    private ObservableCollection<UserViewModel> _Users;
    public ObservableCollection<UserViewModel> Users
    {
        get { return _Users; }
        set { _Users = value; NotifyPropertyChanged("Users"); }
    }

    private void OneditButton_Click_Command(UserViewModel obj)
    {
        //Parameter object is always NULL here!!!
    }

    public event PropertyChangedEventHandler PropertyChanged;

    private void NotifyPropertyChanged(String info)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(info));
        }
    }
}

语法无效，如何修复？

1 个答案: