Basic physics problem solver GUI

I just wrote a simple GUI in wxPython which calculates speed, distance or time according to the input.

Here is the code-

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'''Physics problem Solver Finds Distance, Time or Speed according to input ''' import wx class MyFrame(wx.Frame): def __init__(self, parent, id, title): wx.Frame.__init__(self, parent, id, title) panel=wx.Panel(self, -1) label1= wx.StaticText(panel, -1, 'Speed (kmph):') label2= wx.StaticText(panel, -1, 'Distance (km):') label3= wx.StaticText(panel, -1, 'Time (hours):') label4= wx.StaticText(panel, -1, 'Enter zero for the value you want to find.') self.speed= wx.TextCtrl(panel, -1, '0') self.distance= wx.TextCtrl(panel, -1, '0') self.time= wx.TextCtrl(panel, -1, '0') self.calcBtn= wx.Button(panel, -1, 'Calculate') self.calcBtn.Bind(wx.EVT_BUTTON, self.onCalc) # use gridbagsizer for layout of widgets sizer = wx.GridBagSizer(vgap=5, hgap=10) sizer.Add(label4, pos=(0, 0)) sizer.Add(label1, pos=(2, 0)) sizer.Add(self.speed, pos=(2, 1)) # row 0, column 1 sizer.Add(label2, pos=(3, 0)) sizer.Add(self.distance, pos=(3, 1)) sizer.Add(label3, pos=(4, 0)) sizer.Add(self.time, pos=(4, 1)) sizer.Add(self.calcBtn, pos=(5, 0), span=(1, 2)) # use boxsizer to add border around sizer border = wx.BoxSizer() border.Add(sizer, 0, wx.ALL, 20) panel.SetSizerAndFit(border) self.Fit() def onCalc(self, event): if (self.speed.GetValue())=='0': # find speed self.speed.SetValue(str(float(self.distance.GetValue())/float(self.time.GetValue()))) # set speed elif (self.distance.GetValue())=='0': #find distance self.distance.SetValue(str(float(self.speed.GetValue())*float(self.time.GetValue()))) # set speed elif (self.time.GetValue())=='0': #find time self.time.SetValue(str(float(self.distance.GetValue())/float(self.speed.GetValue()))) # set time app=wx.App() frame= MyFrame(None, -1, 'Physics Problem Solver') frame.Show() app.MainLoop()

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And, here is what the output looks like-

As you can see, this is a very simple program, see the code, find out how it works and you can modify it yourself too!! Share any of your comment/feedbacks in the comments section below.

PS. Please note that to run the program you will need to have wxPython installed.