tab compleation input

[Eli Criffield]

#Thanks for the link from Fredrik Lundh

#from http://effbot.org/librarybook/readline.htm
#You do it like this,

class Completer:
    def __init__(self, words):
        self.words = words
        self.prefix = None
    def complete(self, prefix, index):
        if prefix != self.prefix:
            self.matching_words = [
                w for w in self.words if w.startswith(prefix)
                ]
            self.prefix = prefix
        try:
            return self.matching_words[index]
        except IndexError:
            return None

import readline

# a set of more or less interesting words
validanswers = [ 'yes', 'no', 'maybe', 'tuesday', 'never' ]

completer = Completer(validanswers)

readline.parse_and_bind("tab: complete")
readline.set_completer(completer.complete)

# try it out!
while 1:
    answer = raw_input("Answer the Question: ")
    if answer not in validanswers:
       print "Wrong!"
    else:
       print "Your answer is",answer



Fredrik Lundh wrote:
> Eli Criffield wrote:
>
> > Not sure what your trying to do, but it doesn't work. :)
> > valid doesn't exsist
>
> it's assigned to by the for-in loop, and is only used inside it.
>
> > Either way, it doesn't take the tab tell after you hit enter, Not
> > really what i was getting at. What i want is like a bash shell prompt.
>
> you can use the "readline" module with a custom completer class.  see
> the second example on this page:
> 
>      http://effbot.org/librarybook/readline.htm
> 
> </F>