topic Download Install & import a librairy within the same python script in Controllers

Download Install & import a librairy within the same python script

Jerems — Mon, 08 May 2023 11:54:28 GMT

Hi dear community,

I wondered if it was possible within the same python script to download, install and import a python librairy that is not yet part of the librairies available within the guestshell environment on a Cisco router.

I aim to trigger a python script (downloaded thanks to dhcp options) which requires some additionnal librairies so it can be executed properly. This script is executed by a cisco router at bootup (ZTP operation). The "cli" helps by allowing the execution of some shell command line like :

"guestshell run sudo python3 -m pip install requests"

Within the same script, i would need to import the newly downloaded requests librairy.

Can you please advise ?

Thanks and Regards,

Jerems

Re: Download Install & import a librairy within the same python sc

davidn# — Mon, 08 May 2023 16:21:35 GMT

Not sure about using guestshell to install the required libraries but in the Python script you could use the following to detect and install the missing library:

import subprocess # Check if requests library is installed try: import requests print("Requests library is already installed.") except ImportError: # Install requests library using pip print("Requests library is not installed. Installing now...") subprocess.check_call(["pip", "install", "requests"]) print("Requests library has been installed.")

Hope that help.

Re: Download Install & import a librairy within the same python sc

Jerems — Tue, 09 May 2023 07:31:57 GMT

Thanks a lot for your reply. It looks like at the beginning, we are also missing pip:

Thanks and Regards,

Jerems