modulino

I know Perl has a design pattern known as a modulino, in which a library module file can act as both a library and a script. Is there any equivalent to this in Ruby / Python? I think this design pattern would be very useful for me; I'm writing workers that are fairly short, but also require a script to run them. I think it would be convenient to have this all run from the same place. Thank you! Python has __name__ : class MyClass(object): pass if __name__ == '__main__': print("This will only run if you run the script explicitly, not import it") If you run python myscript.py , the print

Let's say I have a Perl file in which there are parts I need to run only when I'm called as a script. I remember reading sometime back about including those parts in a main() method and doing a main() unless(<some condition which tests if I'm being used as a module>); But I forgot what the condition was. Searching Google hasn't turned out anything fruitful. Can someone point out the right place to look for this? Sinan Ünür If the file is invoked as a script, there will be no caller so you can use: main() unless caller; See brian d foy 's explanation . #!/usr/bin/perl use strict; use warnings;