Exercise W-1-2 calculate บวก ลบ คูน หาร .CGI ด้วย Python

localhost:8000/cgi-bin/hello.cgi

โครงสร้างของ HTML

 
  #!/usr/bin/env python
  # -*- coding: UTF-8 -*-
  #!/usr/bin/python
  import cgi

  print "Content-type: text/html;charset=utf-8 \n\n"

  print "<html>"
  print "<head><title>Test Calculate</title></head>"
  print "<body>"
  print """ <div align="center"><font color="DodgerBlue3" size="25" face="Comic Sans MS"><b>
        Building Software Systems II
       </b></font></div>
   """
  print """ <div align="center"><font color="DodgerBlue3" size="5" face="Comic Sans MS"><b>
      การพัฒนาระบบซอฟต์แวร์ 2
     </b></font></div>
   """
  print '<div align="center"><h1>Hello Calculate Program!</h1></div>'

  print '<div align="center"><form method="post" action="hello.cgi">'
  print '<p><input type="text" name="input1"/></p>'
  print '<input type="submit" name="+" value="บวก"/>'
  print '<input type="submit" name="-" value="ลบ"/>'
  print '<input type="submit" name="*" value="คูณ"/>'
  print '<input type="submit" name="/" value="หาร"/>'
  print '<p><input type="text" name="input2"/></p>'
  print '</form></div>'

  form = cgi.FieldStorage()
  input1 = form.getvalue("input1")
  input2 = form.getvalue("input2")
  print '<div align="center">'
  try: 
       if form.getvalue("+"):
            print '<h1>'+input1+" + "+input2+" = "+str(int(input1)+int(input2))+'</h1><br/>'
       elif form.getvalue("-"):
            print '<h1>'+input1+" - "+input2+" = "+str(int(input1)-int(input2))+'</h1><br/>'
       elif form.getvalue("*"):
            print '<h1>'+input1+" * "+input2+" = "+str(int(input1)*int(input2))+'</h1><br/>'
       elif form.getvalue("/"):
            if int(input1) == 0 or int(input2) == 0:
                 print '<h1>Error</h1>'
            else:
                 print '<h1>'+input1+" / "+input2+" = "+str(float(input1)/float(input2))+'</h1><br/>' 
        except:
   print '<h1>Input Error</h1>'

  print '</div>'
  print "</body>"
  print "</html>"