validation for float input

wxPython Users
1

What about this?

try:
    cutoff = float(cutoff)
except ValueError:
    dlg = wx.MessageDialog(self,"Cutoff must be float","",style=style)
    dlg.ShowModal()
    dlg.Destroy()

···

-----Mensaje original-----
De: Jeffrey O'Neill [mailto:jco8@cornell.edu]
Enviado el: Jueves, 08 de Enero de 2004 15:34
Para: wxpython-users@lists.wxwindows.org
Asunto: [wxPython-users] validation for float input

Hello,

I'm a newbie, but I've succeeded in getting a decent application up and
running (http://stv.sourceforge.net), thanks to the extensive examples that
come with wxPython. I have a question about validating user input.

In my app I ask the user for a float. To validate, I override the default
OK button processing in the dialog. Here is an example for making sure
that the user entered a float:

   def OnOK(self, event):
       if re.search("^\s*(\d+|\d*\.\d+|\d+\.\d*)\s*$", self.Cutoff):
           event.Skip()
       else:
           dlg = wx.MessageDialog(self.Cutoff must be a float.",
                                  "", wx.OK | wx.ICON_INFORMATION)
           dlg.ShowModal()
           dlg.Destroy()

This seems easier than using other validation methods. I tried the masked
text controls, but I don't like how the control is initialized with spaces.

Any comments on the above?

Jeff