cgi integration question

[Gerhard Häring]

Ken <ken at hotmail.com> [2002-10-11 13:55 GMT]:
> "Gerhard Häring" <gerhard.haering at opus-gmbh.net> wrote:
>> Yeah. As you seem to use Windows (with a b0rken newsreader), you
>> won't have a 'cat' program. But you will have a 'sort' program,
>> so you can try the following:
>>
>> >>> import os
>> >>> outf, inf = os.popen2("sort")
>> >>> print >>outf, "Mark"
>> >>> print >>outf, "Joe"
>> >>> print >>outf, "Marvin"
>> >>> outf.close()
>> >>> lines = inf.readlines()
>> >>> inf.close()
>> >>> print lines
>> ['Joe\n', 'Mark\n', 'Marvin\n']
> 
> Will argc[1] = "Mark", argc[2]="Joe" and argc[3]="Marvin" in this example?

Using commandline parameters will not work for "sort", but you
can parse them in your own C++ app. On the Python side, just send
them over with os.popen2, in your C++ app, read them with argc,
argv.

> Does "lines = inf.readlines()" read out what is exactly printed
> out from the return value of the main method or does it catch
> out what is printed out from the cout<< command?

And efficient way to answer this question is to read the
documentation about readlines(), or just try it out. Yes, the
lines read with readline() or readlines() will include the line
termination characters at their end.

> Eg:, if I have a command line:
> 
> cout<<"hello world"<<"hi"<<endl;
> 
> will it appear as ['hello world', 'hi'] or ['hello', 'world',
> 'hi']? will it have '\n' automatically appended to it?

Just try it out.

At this point, I think you should spend some time with the
documentation for the Python modules involved, and perhaps with a
Python tutorial too if you don't know the Python basics already.

Also, don't fear playing around with the interactive interpreter
or small Python scripts. It's the fastest way approach the
problem.


-- Gerhard