On Thu, Jun 25, 2015 at 2:53 PM, fl <rxjw...@gmail.com> wrote: > Hi, > > I read a tutorial on lambda on line. I don't think that I am clear about > the last line in its example code. It gives two parameters (22, 23). > Is 22 for n, and 23 for x? Or, it creates two functions first. Then, > each function gets 22 while the other function gets 23? > > >>>> def make_incrementor (n): return lambda x: x + n >>>> >>>> f = make_incrementor(2) >>>> g = make_incrementor(6) >>>> >>>> print f(42), g(42) > 44 48 >>>> >>>> print make_incrementor(22)(33)
make_incrementor is a function that takes an argument n. It returns a function that takes an argument x. So when you do make_incrementor(22) that passes 22 to make_incrementor as the value of n, and when you do make_incrementor(22)(33), that also passes 22 to make_incrementor as the value of n, and then it passes 33 to the returned function as the value of x. -- https://mail.python.org/mailman/listinfo/python-list
