greetings, 1)
Z4 = sum(val for val in XS) is same as Z4 = sum(XS) 2) class Foo() can also ne written as class Foo: 3) in Foo.x you are using the class just to assoxiate some variables with a name. what is the purpose of tge script / what are you trying to do? Abdur-Rahmaan Janhangeer http://www.pythonmembers.club | https://github.com/Abdur-rahmaanJ Mauritius -- https://mail.python.org/mailman/listinfo/python-list