bill.wu <bill.wws <at> gmail.com> writes: > > > > i am new guy. > i ask a easy question. > > why the first one have"x",the second one doesn't have "x". what > is different? when write "x",when don't write "x". > > in my point,the second one don't def variable. > >
Variable scope. By declaring the x as "global", any changes to x in func() will affect x outside the function, as well. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor