how can I delet "None" in code output

[shahram555]

>>class class1:
     name='civil'
     def printname(self,name):
         print self.name
         print name
>>you=class1()
>>you.mark=100
>>print you.printname('shahram'),you.mark
 
  civil
  shahram
  None 100

[dwblas]

print you.printname('shahram'),you.mark

prints the return from printname which is None. Try the following code

class class1:
     name='civil'
     def printname(self,name):
         print self.name
         print name
         print self.mark
         return "returned from printname"
 
you=class1()
you.mark=100
print you.printname('shahram')

So you have to return something you want to print, or eliminate the print statement. You might want to look at this tutorial on functions which includes return statements.