How can i run a Python script whenever the alert is generated taking the Hostname from the Alert and would like to use that inside the script ?

I am looking forward to create a Python script which should run whenever there we get Alerted. Also, My alert would be showing a Hostname and I would like to use that Hostname information inside my Python script. Apologies in advance, I am doing it for the first time so it would be really helpful if you can help me like how can this be possible ? Thanks in advance