My First Script - Looking For Help

[buran]

def get_hostname():
    response = raw_input("Please enter your name: ")
    body = '[{{"hostname": "{}"}}]'.format(response)
    return body

print get_hostname()

I expect you want something like this, but not sure about quotes, etc.
Also if you want to create a json, better use json module

import json
def get_hostname():
    response = raw_input("Please enter your name: ")
    body = [{'hostname':response}]
    return json.dumps(body)

print get_hostname()

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Also, if you don't have really good reason for using python2 (like maintaining old code base) you should be using python3 (latest is python 3.6.5)