Dell N3200-ON Networking N-Series Switches User Guide version 6.8.0 - Page 1689

49 Dell Networking Python Support Dell Networking switches support installation and execution of Python applications. Python applications that are to be executed on the switch must be developed and tested offline to the maximum degree possible. The switch does not offer interactive shell access for development of Python scripts, nor does the Dell Networking switch come with all of the normal Python "batteries included" modules. A list of the included packages is in the example below. Output from Python scripts is sent to the serial console, so a serial connection is mandatory when developing scripts. Input from the console is not supported, e.g. raw_input() is not supported. This means that interactive Python applications are not suitable for use in the switch environment. An example Python script that prints some useful information is shown below. Explanation of Python syntax is beyond the scope of this document. Refer to the 3.7 version of Python documentation available elsewhere. #!/usr/bin/env python import sys print "Hello World!\n" print (sys.version) help('modules') To execute this script on the switch, save the lines above in a file named "app". Package the app script using the following commands on a Linux system. The package may be a gzipped tarball with a .tgz or .tar.gz extension. It is required that the permissions be set on the app file prior to packaging; i.e., user read, write, and execute must be set. Group and other permissions need not be set. Application names can be a maximum of 15 characters. /home/jmclendo/tftpboot>chmod u+rwx app /home/jmclendo/tftpboot>tar czf app.tgz app Copy the resulting file to the switch using the copy command with the application keyword. The application may be a single script, or it may be a collection of scripts in a compressed or uncompressed tarball. Applications are copied to the user-apps directory. If a single file is downloaded, the Dell Networking Python Support 1689