Line completion with custom commands

[gu]

Steve Holden wrote:
> gu wrote:
>> Hi, my Python program can be launched with a range of different options
>> (or subcommands) like:
>>
>> $ myProgram doSomething
>> $ myProgram doSomethingElse
>> $ myProgram nowDoSomethingDifferent
>>
>> I want it to use auto-completion with so that if i type "myProgram d" it
>> returns "myProgram doSomething" and if i type "myProgram n" it renders
>> "myProgram nowDoSomethingDifferent". This is similar to the average use
>> of the module rlcompleter, but it does not pick possible completion
>> options from the filesystem (or from history) but from a custom set of
>> strings (that correspond to the available options for my program)
>>
>> Any idea on how to implement this?
>>
>> I'm aware of the variable PYTHONSTARTUP (that should point to a file I
>> don't know how to write).
>>
>> As a working example, django-admin (from the django package) has the
>> same exact feature i'm looking for
> 
> The issue here is that Python doesn't get control until afer you've hit
> RETURN on the command line. so nothing you can do in your program or
> interpreter setup will have any effect on how the command shell behaves.
> 
> regards
>  Steve

I see, but how does django-admin work, then?