About the Python API
Beginning with Cisco NX-OS Release 9.3(5), Python 3 is now supported. Python 2.7 will continue to be supported. We recommend that you use the python3 command for new scripts.
The Cisco Nexus 9000 Series switches support Python v2.7.11 and v3.7.3 in both interactive and noninteractive (script) modes and are available in the Guest Shell. For a list of Cisco Nexus switches that support Python scripting, see Platform Support for Programmability Features.
Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python's elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms.
The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python website:
The same site also contains distributions of and pointers to many free third-party Python modules, programs and tools, and more documentation.
The Python scripting capability gives programmatic access to the device's command-line interface (CLI) to perform various tasks and Power On Auto Provisioning (POAP) or Embedded Event Manager (EEM) actions. Python can be accessed from the Bash shell.
The Python interpreter is available in the Cisco NX-OS software.
For the platforms that support Python, users are allowed to access low level OS system calls.