![trying to learn python tkinter. but when i run the following code the tkinter window does not open[error: "RMS" is not defined"] " - Stack Overflow trying to learn python tkinter. but when i run the following code the tkinter window does not open[error: "RMS" is not defined"] " - Stack Overflow](https://i.stack.imgur.com/7gRBJ.png)
trying to learn python tkinter. but when i run the following code the tkinter window does not open[error: "RMS" is not defined"] " - Stack Overflow
![Tkinter Tkinter is a GUI (graphical user interface) widget set for Python. The Tkinter module (“ToolKit interface”) is the standard Python interface to. - ppt download Tkinter Tkinter is a GUI (graphical user interface) widget set for Python. The Tkinter module (“ToolKit interface”) is the standard Python interface to. - ppt download](https://slideplayer.com/slide/16893190/97/images/3/Tkinter+Full+screen+import+tkinter+as+tk+root+%3D+tk.Tk%28%29.jpg)
Tkinter Tkinter is a GUI (graphical user interface) widget set for Python. The Tkinter module (“ToolKit interface”) is the standard Python interface to. - ppt download
![Tkinter apps don't work properly when graphics backend is set to Tkinter · Issue #7074 · spyder-ide/spyder · GitHub Tkinter apps don't work properly when graphics backend is set to Tkinter · Issue #7074 · spyder-ide/spyder · GitHub](https://user-images.githubusercontent.com/18006001/39675110-c5a319e6-5156-11e8-8b8f-76a1514cb33a.gif)