Asrarahmed Kadri wrote: > > > > Hi Folks, > > > I have a textbox and a button (in tkinter). What I want is the > following functionality: The user enters a number in the text box and > presses the button. The event will call a function called "adder" and > when the user enters another value and presses the button, the 'adder' > function is again called and the summation of both the numbers is > displayed. > The problem is I am not able to store the value of 'result' variable. > I want to make it persistant between the function calls. There are at least 3 ways to accomplish persistent storage in Python: global variables class attributes files
For your purpose the simplest is a global variable (one that may be assigned a value outside of any function, and/or may be (re)assigned within a function if declared global in the function. Simplest demonstration: def f(): global a a = 3 f() print a > > TIA. > Regards, > Asrarahmed > > -- > To HIM you shall return. > ------------------------------------------------------------------------ > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > -- Bob Gailer 510-978-4454 _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
