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I have an application using jython2.1 and I need to run external applications, (lets say some .exe for now). I also need to capture the input and output such as logs from that program.

Jython 2.1 seems to not have the support for popen().

ANy idea how I do that , apart from depending on standard Java libraries? Just trying to explore different ways of doing that. Any small suggestion would be of great help for me Guys!!

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You can just use Java's classes that do this.

from java.lang import Runtime
process = Runtime.getRuntime().exec("ls -l")
output = process.getInputStream() # process' output is our input
# read output somehow, while the process is generating it
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I tried this one, and it works perfect for me. Except for the fact like if I run say Notepad.exe, the process opens the notepad but never closes until I close notepad. Is there anyway that I can get the control from the child program when it successfully ran?
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Any reason you're using jython 2.1? I mean, it's ancient - it was released 10 years ago - you can't even find download/documentation for it anymore.

10 years is a long time in software development.

Newest version seems to support the subprocess module, which is the current python way of executing a subprocess and capturing output.

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