Am 25.10.16 um 14:45 schrieb Marko Rauhamaa:
Chris Angelico <ros...@gmail.com>:
On Tue, Oct 25, 2016 at 11:09 PM, Marko Rauhamaa <ma...@pacujo.net> wrote:
Blocking calls are evil.
Oh, that's why. Got it. So because blocking calls are fundamentally
evil, we have to... what? What's so bad about them? Remember, not
every program is a server handling myriad clients.
Myriads or not, we are talking about interactive (or reactive) programs.
The paradigm of choice is event-driven programming.
I agree, which means (basically) GUI, which means event loop and all
that stuff, making programming more inconvenient or complicated.
That reminds me of a standard "problem" with introductory programming
texts. Many books describe the first programs along the lines of
x=input('Please enter x: ')
y=input('Please enter y: ')
print('The product is ', x*y)
Now, such programs are not useful in practice. Once you try, you will
inevitably make errors entering the data, restart that thing multiple
times and curse the author badly. "Real" programs either provide a GUI
or a command line parser which allows for the correction of errors and
entering the data in arbitrary order. Both lead to more complex programs.
Maybe some (extremely simple) option parser or GUI thingy could be
implemented into Python directly, so that the novice doesn't have to
bother with the details, in the sense of:
parameters({'x', double, 'y', double})
output('The product is ', x*y)
which becomes either a command line thingy with -x and -y options or a
GUI with input fields and an output line.
Christian
--
https://mail.python.org/mailman/listinfo/python-list
