Over a million developers have joined DZone.

PBS Combines Features of Bash with Power of Python

· Web Dev Zone

Start coding today to experience the powerful engine that drives data application’s development, brought to you in partnership with Qlik.

PBS, a new Python extension available for developers, aims to provide the best features of Bash with the flexibility of Python.  Far from "a collection of system commands implemented in Python," importing PBS provides a dynamic lookup mechanism that makes system programs available to a shell-style script.

Andrew Moffat provides several examples of how useful PBS can be, including this one dealing with Exceptions:

Exceptions are dynamically generated based on the return code of the command. This lets you catch a specific return code, or catch all error return codes through the base class ErrorReturnCode:

try: print ls("/some/non-existant/folder")
except ErrorReturnCode_2:
    print "folder doesn't exist!"
except ErrorReturnCode:
    print "unknown error"
-- Andrew Moffat

Other examples provided by Moffat on his GitHub page include:

  • Executing Commands
  • Piping
  • Finding Commands
  • Commandline Arguments
  • Weirdly-names Commands

PBS requires Python 2.5.1 or higher and has been released under the Apache License 2.0.

Create data driven applications in Qlik’s free and easy to use coding environment, brought to you in partnership with Qlik.


Opinions expressed by DZone contributors are their own.

The best of DZone straight to your inbox.

Please provide a valid email address.

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}