On 11/28/11 12:12 PM, Tim Chase wrote:
Are there best-practices for creating wizards or asking various questions
(whether yes/no or text/numeric entry) in a cmd.Cmd class? Something like the
imaginary confirm() and get_string() methods here:
class MyCmd(cmd.Cmd):
def do_name(self,line):
s = get_string(prompt=line, default="Whatever")
...
def do_save(self,line):
if os.path.isfile(line):
if not confirm("%r exists. Continue?", True): return
self.save(line)
def save(self, filename):
...
I can monkey with printing messages and using raw_input(), but I'd like to know
if there's a better way (such as something interacting with readline for
text-entry-with-history-and-completion,
If you import readline, then any following uses of raw_input() will
automatically use readline. You may want to swap out the history when you use
get_string() or confirm() so they don't mess up the regular Cmd history, but the
basic functionality should work out-of-box.
or raw-character input for Y/N answers
rather than the need to hit <enter>, making it feel more uniform),
I actually have a preference for needing to press enter for Y/N answers, too.
It's distinctly *less* uniform to have some questions requiring an enter and
some not. It can be unpleasantly surprising to the user, too.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
--
http://mail.python.org/mailman/listinfo/python-list