Python reference with Tkinter label change text -

-

I am trying to replace my tanker label text with another function. Somehow I can not reference the label and therefore do not change the label, just add a new one over the old.

works within the init-function of the self.errorLabel ['text'] = 'second' window, but I should be able to do it with any other function, Therefore, in some way a reference mistake

This is my code: tkinter import import system import * import ttk class window (frame): def __init __ (self, master = none): Frame .__ init __ (self, master) self.master = master self.errorLabel = Label (self, text = "some text"). Grid (line = 0) self.init_window () def init_window (self): self.master.title ("example") self.pack (fill = both, extension = 1) goButton = button (auto, text = "go! ", Command = self.client_go) .grid (line = 1, column = 1) quitButton = button (auto, text =" off ", command = self.client_exit) .grid (line = 1, column = 0) def client_exit (Self): exit () def client_go (self): self.errorLabel ['text'] = 'second' # type error: 'any type' object item assignment does not support itself e rrorLabel = label (self, Text = "second"). Grid (Row = 0) Return Root = Tk () Root.Ezimetry ("800x500") App = Window (root) root.mainloop ()

This is a very common error with the tanker code widget. Grid returns none , so when you type: 

  self.errorLabel = Label (self, text = "some text") .grid ( Line = 0)   
  self.errorLabel  is  none . Instead, create a widget and use its geometry manager's code in different lines:  
  self.errorLabel = Label (self, text = "some text") self.errorLabel.grid (Line = 0)

Comments

Post a Comment

Popular posts from this blog

php - PDO bindParam() fatal error -

-
I am trying to learn PDO, now I have written this small code, but it gives me a serious error: < P> Fatal error: Call a member function at a non-object dot () ... $ con = new mysqli ("127.0.0.1", "root", "", "csvdangercheck"); $ Query = $ con- & gt; ("Id,` var1`, `var2`) values ​​(" id,: var1,: var2) ";); $ query- & gt; bypass pattern (': id', $ id); $ query- & gt; BindParam (': var1', $ VAL1); $ Query- & gt; bindParam (': var2', $ val2); $ Query-> Executed (); I Trying to use print_r ($ con-> errorInfo ()) but Fatal error: Undefined method mysqli :: errorInfo ( ) ... can someone tell me what am I missing? Flaffeh said, you have PDO Missing Mysqy, try it: $ con = new PDO ('mysql: host = 127.0.0.1; dbname = csvdangercheck', 'root', '');
Read more

logging - How can I log both the Request.InputStream and Response.OutputStream traffic in my ASP.NET MVC3 Application for specific Actions? -

-
For a specific set of tasks, I need to log in to the incoming request inputstream as well as outgoing response. is. I am using an ActionFilterAttribute for this and overriding the OnActionExecuted and OnResultExecuted methods. So I'm starting with this idea ... Public category ActionLoggerAttribute: ActionFilterArrbit {Public Override Zero On-Offed Execution (ActionActioned Contact Filter Filter) {base.OnActionAxecuted (FilterContext); HttpRequestBase request = filterContext.HttpContext.Request; // TODO: Log the request. InputStream} Public Override Zero OnResultExecuted (ResultExecutedContext FilterContext) {base.OnResultExecuted (filterContext); HTTPRPSPointBase Response = FilterContacts Hpptex response; // TODO: Log on Response.OutputStream}} Ideally I'll hook it up with enterprise library logging because I'm already using it for error logging. Am I reaching the input and output stream at the right time? Can I easily use the Enterprise Library to log i
Read more

java - Why my included JSP file won't get processed correctly? -

-
I am trying to create Java web framework (and learning), and on the basis of 'Code Generator In the process of making the material view of the database in the process of development, I stumbled into a difficulty, which I do not know how to solve it. First of all, I want the following index.jsp : & lt; Body & gt; Use all pages to be created. & Lt;% @ include file = "header.jsp"% & gt; & Lt; Hours / & gt; & Lt;% @ included file = "body.jsp"%> & Lt; Hours / & gt; & Lt;% @ include file = "footer.jsp"% & gt; & Lt; / Body & gt; And, in body.jsp , I should have it like this: & lt; Jsp: include page = "$ {Application_modul}"%> Where application_modul is an attribute defined in its controller: request.setAttribute ("application_modul", "USER_ACCOUNT \\ ' View_user_account.jsp "); This file can be found properly, but the processed JSP does
Read more