python raise exception

>>> def catch():
...     try:
...         asd()
...     except Exception as e:
...         print e.message, e.args
... 
>>> catch()
global name 'asd' is not defined ("global name 'asd' is not defined",)

def FileCheck(fn):
    try:
      open(fn, "r")
      return 1
    except IOError:
      print "Error: File does not appear to exist."
      return 0

result = FileCheck("testfile")
print result

def prefill(n,v):
    try:
        n = int(n)
    except ValueError:
        raise TypeError("{0} is invalid".format(n))
    else:
        return [v] * n

def raise_an_error(error):
    raise error

raise_an_error(ValueError)

import requests

url = "https://api.mailerlite.com/api/v2/subscribers"

payload = {
    "fields": {
        "company": "string",
        "city": "string"
    },
    "resubscribe": False,
    "type": "nullactive",
    "name": "Myname",
    "signup_ip": "string",
    "signup_timestamp": "2022-09-17",
    "confirmation_ip": "string",
    "confirmation_timestamp": "2022-09-17"
}
headers = {
    "accept": "application/json",
    "X-MailerLite-ApiDocs": "true",
    "content-type": "application/json",
    "X-MailerLite-ApiKey": "wyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJhdWQiOiI0IiwianRpIjoiODc3OTJkNTBjMjFkM2JkZWY5MmYyOWZjMDBlMDM3YWEzMmMxNTU3OGFkMTI4OTgwNjBmODNlOWIyNDQwZmFhMjllNTAzMjU0ZTYwNDg3ZDciLCJpYXQiOjE2NjM0MjU2MTguMzY1NzIzLCJuYmYiOjE2NjM0MjU2MTguMzY1NzI2LCJleHAiOjQ4MTkwOTkyMTguMzYwOTQyLCJzdWIiOiIxODE5MTAiLCJzY29wZXMiOltdfQ.AeU2wbLTUyO7BCwRBo4hDDzd-wg63Q5NgG93p3OsGZBYxv3IBxsfxIKKJSqXghCpTgF-BX9wOosGvIZACwDbhcO5yQLQZB1fh6I3jD54q-WBbL35ynShHpBpK3qgy7r6Q6qjsoR0xQLfW1-WAxOhS4hqlF2TxTPs08Ps83aOu84MDddgCR4XaiBTVNGaDIhG-jKR1k0dg17hY5rN2YWbBGV9KPWKIDt6EwPrX7F9uf_rVNWjgatWjRMuep-t77tTU8Jsxbv0pnfiwpctxo7BIsiz7YuvcKYKbppbmoDUZvZkllh6GuHc6O21faQDiRRtMyRG0zAdOUwZy6vFp3ZYeKIjMENtpOilDJOLHrfjtAI6E-JZ91UTLDfKXvuISCzSc7VJzpS-b0YY1j8oA0sNvwMdGtCovs2AD_Uxe1oQb1RMD2S1k2bkqIXwIjTMzVA4ty48isp5Zsgg64BZEd9tb5e0twLvhlPfYM8NV2y85GyyssMuni6zPjjLTtauP7imJ1Qyw4JoM8dBWC_JoHlHhcnisCedNdvezdOGnOQ95NNyUZCi6V-I1qGz_eR4ec8sKF0TbCwujwe0JjQX0xjd8e4HgQc5dwaNZxoE4ni9Ww-_OdrqvLd6nFk4MVq0t7TqAcRrpRczP6wQseZcmiJbD2QEHg94-jN56i4c-whygBQ"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)