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Mar 8th, 2006
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Dropdown box in Python

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hi, i am very new in python. can anyone tell me that how to create dynamic dropdown box in python scripting.(triple dropdown box)
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Re: Dropdown box in Python

What GUI library are you using? I am a little familiar with Tkinter and wxPython and might be able to help. There are others I am not familiar with.
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Re: Dropdown box in Python

i am working in ubuntu linux. and using python 2.4.2.
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Re: Dropdown box in Python

simple code for creating dropdown box using javascript.
the html code for this, is
Python Syntax (Toggle Plain Text)
  1. <html>
  2. <head>
  3. <title></title>
  4. <script language="javascript" src="list.js"></script>
  5. </head>
  6.  
  7. <body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#800080" alink="#ff0000" onload="fillCategory();">
  8.  
  9. <FORM name="drop_list"  >
  10.  
  11. <SELECT  NAME="Category" onChange="SelectDistrict();" >
  12. <Option value="">States</option>
  13. </SELECT>&nbsp;
  14. <SELECT id="District" NAME="District" onChange="SelectCollege();">
  15. <Option value="">Districts</option>
  16.  
  17. </SELECT>
  18. <SELECT id="College" NAME="College">
  19. <Option value="">College</option>
  20. </SELECT>
  21. <input type="button" name="go" value="Value Selected"
  22. onclick="alert(document.drop_list.College.options[document.drop_list.College.selectedIndex].value);">
  23. </form>
  24.  
  25. </body>
  26.  
  27. </html>

here i am calling javascript writen in another file list.js. The content of list.js is following

Python Syntax (Toggle Plain Text)
  1. function fillCategory(){ 
  2.  
  3.  // this function is used to fill the category list on load
  4.  
  5. addOption(document.drop_list.Category, "Karnataka", "Karnataka", "");
  6.  
  7. addOption(document.drop_list.Category, "Jharkhand", "Jharkhand", "");
  8.  
  9. addOption(document.drop_list.Category, "Hariyana", "Hariyana", "");
  10.  
  11. }
  12.  
  13.  
  14. function SelectDistrict(){
  15.  
  16. // ON selection of category this function will work
  17.  
  18.  
  19. removeAllOptions(document.drop_list.District);
  20. addOption(document.drop_list.District, "", "District", "");
  21.  
  22.  
  23. if(document.drop_list.Category.value == 'Karnataka'){
  24. addOption(document.drop_list.District,"Bangalore", "Bangalore");
  25. addOption(document.drop_list.District,"Kolar", "Kolar");
  26. addOption(document.drop_list.District,"Hubali", "Hubali");
  27. }
  28. if(document.drop_list.Category.value == 'Jharkhand'){
  29. addOption(document.drop_list.District,"Ranchi", "Ranchi");
  30. addOption(document.drop_list.District,"Jamshedpur", "Jamshedpur");
  31. addOption(document.drop_list.District,"Hazbagh", "Hazbagh", "");
  32. }
  33. if(document.drop_list.Category.value == 'Hariyana'){
  34. addOption(document.drop_list.District,"Noida", "Noida");
  35. addOption(document.drop_list.District,"Gurgaon", "Gurgaon");
  36. addOption(document.drop_list.District,"Panipat", "Panipat");
  37. }
  38.  
  39. }
  40.  
  41. function SelectCollege(){
  42.  
  43. // ON selection of District this function will work
  44.  
  45.  
  46. removeAllOptions(document.drop_list.College);
  47. addOption(document.drop_list.College, "", "College", "");
  48.  
  49.  
  50. if(document.drop_list.District.value == 'Bangalore'){
  51. addOption(document.drop_list.College,"BIT Bangalore", "BIT Bangalore");
  52. addOption(document.drop_list.College,"MVIT Bangalore", "MVIT Bangalore");
  53. }
  54. if(document.drop_list.District.value == 'Kolar'){
  55. addOption(document.drop_list.College,"BIT Kolar", "BIT Kolar");
  56. addOption(document.drop_list.College,"BIT Kolar", "BIT Kolar");
  57. }
  58. if(document.drop_list.District.value == 'Hubali'){
  59. addOption(document.drop_list.College,"YMCA", "YMCA");
  60. addOption(document.drop_list.College,"IIT", "IIT");
  61. }
  62. if(document.drop_list.District.value == 'Ranchi'){
  63. addOption(document.drop_list.College,"ZXA", "ZXA");
  64. addOption(document.drop_list.College,"DSA", "DSA");
  65. }
  66. if(document.drop_list.District.value == 'Jamshedpur'){
  67. addOption(document.drop_list.College,"QWE", "QWE");
  68. addOption(document.drop_list.College,"ZXC", "ZXC");
  69. }
  70. if(document.drop_list.District.value == 'Hazbagh'){
  71. addOption(document.drop_list.College,"ZDC", "ZDC");
  72. addOption(document.drop_list.College,"FGV", "FGV");
  73. }
  74. if(document.drop_list.District.value == 'Noida'){
  75. addOption(document.drop_list.College,"uio", "uio");
  76. addOption(document.drop_list.College,"klj", "klj");
  77. }
  78. if(document.drop_list.District.value == 'Gurgaon'){
  79. addOption(document.drop_list.College,"yhn", "yhn");
  80. addOption(document.drop_list.College,"fgh", "fgh");
  81. }
  82. if(document.drop_list.District.value == 'Panipat'){
  83. addOption(document.drop_list.College,"olm", "olm");
  84. addOption(document.drop_list.College,"bnm", "bnm");
  85. }
  86. }
  87. ////////////////// 
  88.  
  89.  
  90.  
  91. function removeAllOptions(selectbox)
  92.  
  93. {
  94.  
  95. 	var i;
  96.  
  97. 	for(i=selectbox.options.length-1;i>=0;i--)
  98.  
  99. 	{
  100.  
  101. 		//selectbox.options.remove(i);
  102.  
  103. 		selectbox.remove(i);
  104.  
  105. 	}
  106.  
  107. }
  108.  
  109.  
  110.  
  111.  
  112.  
  113. function addOption(selectbox, value, text )
  114.  
  115. {
  116.  
  117. 	var optn = document.createElement("OPTION");
  118.  
  119. 	optn.text = text;
  120.  
  121. 	optn.value = value;
  122.  
  123.  
  124.  
  125. 	selectbox.options.add(optn);
  126.  
  127. }

this is very simple to understand it.
If any one have code to create dropdown box in Python script plz send me....

Edit: Added code tags vegaseat
Last edited by vegaseat; Mar 9th, 2006 at 10:07 am.
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Re: Dropdown box in Python

Here is an example using wxPython. Once you have Python installed you need to download wxPython appropriate for your system and Python version, it's free!
python Syntax (Toggle Plain Text)
  1. # the wxChoice() widget, a simple dropdown box
  2. # wx.Choice(parent, id, pos, size, choices, style)
  3. # tested with Python24 and wxPython26
  4. # should work on Windows, Linux, and Unix systems
  5.  
  6. import wx
  7.  
  8. class MyFrame(wx.Frame):
  9.     """ class MyFrame inherits wxFrame, uses default ID of -1"""
  10.     def __init__(self ):
  11.         wx.Frame.__init__(self, None, -1, 'wxChoice test', size=(300, 150))
  12.  
  13.         colorList = ['red', 'green', 'blue', 'yellow','white']
  14.         # create the dropdown box
  15.         self.choice1 = wx.Choice(self, -1, choices=colorList)
  16.         # select item 1 = 'green' to show
  17.         self.choice1.SetSelection(1)
  18.         # set focus to receive optional keyboard input
  19.         # eg. type r for red, y for yellow
  20.         self.choice1.SetFocus()
  21.         # new event handler wxPython version 2.5 and higher
  22.         self.choice1.Bind(wx.EVT_CHOICE, self.onChoice)
  23.  
  24.     def onChoice(self, event):
  25.         '''get the slected color choice'''
  26.         self.color = self.choice1.GetStringSelection()
  27.         self.SetTitle(self.color)  # test
  28.  
  29.  
  30. # this is only a small application
  31. application = wx.PySimpleApp()
  32. # call class MyFrame
  33. frame1 = MyFrame()
  34. # show the frame
  35. frame1.Show(True)
  36. # start the event loop
  37. application.MainLoop()
Last edited by vegaseat; Aug 12th, 2009 at 5:44 pm.
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