[IPython-dev] Improved piping functionality (was: ...dashing for black and white...)

[Walter Dörwald]

Walter Dörwald wrote:
> Ville Vainio wrote:
>> On 7/13/06, Walter Dörwald <walter at livinglogic.de> wrote:
>>
>>> That already works (if you're using ibrowse as the output, i.e. if you
>>> have curses). For example try:
>>>    ix("ls -l -R") | ifilter("_.endswith('.py')")
>>> This starts output right away (once it finds the first Python file).
>>> However if the command executed does some output it messes up the
>>> screen. Maybe subprocess is the solution for that?
>> Can't you just use normal os.popen4 to get both stdout and stderr (and
>> thus avoid the risk of screwing the screen?)
> 
> I'll give this a try.

I just checked in a patch that changes ix() to use os.popen4(). Now you
can do e.g.:
   ix("find /") | ifile
This seems to be pretty fast. Using the goto command to jump to row
10000 is practically instant. (Press "g" enter "10000" and press RETURN).

Servus,
   Walter