| Re: Python and IDL [message #39569 is a reply to message #39567] |
Fri, 28 May 2004 09:12  |
![marc schellens[1] is currently offline](theme/default/images/xoffline.png.pagespeed.ic.XRkd1fkXye.png "marc schellens[1] is currently offline")
marc schellens[1]
Messages: 183
Registered: January 2000
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Senior Member |
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Probably one could write a python wrapper for CALL_EXTERNAL or a DLM.
Note that GDL (http://gnudatalanguage.sourceforge.net) has an interface
to python.
marc
Michael Wallace wrote:
> I'm probably the only person here who'd be interested in this, but I
> guess I'll throw it out anyway.
>
> I have recently started using Python and love the language. Python is
> interpreted, interactive, object oriented, and has dynamic data types
> and dynamic typing. From this perspective, IDL and Python are very
> similar. There are even projects such as SciPy (http://www.scipy.org)
> which add some scientific analysis to the language.
>
> Python does have a couple nice benefits, namely the huge number of
> modules available where there's everything from operating system
> commands to networking to XML to email etc. One thing I've found myself
> doing recently is writing my core analysis processing code in IDL and
> then writing a Python wrapper around the particular code. For example,
> in one of my programs, I use Python to automatically download files from
> an FTP site and then call IDL to do the specific processing on the
> files. In another program, I use Python to process command line
> arguments and then call the appropriate IDL code based on the arguments.
>
> Currently, in my Python programs I open a pipe to an IDL process and
> write the IDL commands to the pipe. What I'm wondering is if there is
> an efficient way to send data from IDL back to Python. The only thing
> I've found so far is to have IDL write data to stdout and set up the
> Python side to read this stream. However, this can get pretty
> inefficient at times. Without any direct conversion between the two
> languages available, are there any other (i.e. better, efficient) ways
> to set up bi-directional interprocess communication between Python and IDL?
>
> What'd be really nice is if RSI provided some mechanism for IDL and
> Python to communicate at a much closer level than interprocess
> communication. Karl, that's a hint. ;-)
>
> -Mike
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