Line completion with custom commands

Steve Holden steve at
Fri Jan 9 12:24:29 CET 2009

gu wrote:
> 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?
Probably the issue you has was not knowing the name of the feature. When
I asked Google to tell me about django-admin command completion it said:

as the first hit. As you will see, this is done by configuring the shell
to know about the specific commands it has to deal with. Enjoy!

Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC    

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