PYTHON

how to raise a error in python

# You can raise a error in python by using the raise keyword
raise Exception("A error occured!")

raise exception in python

raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.

raise exception in python

#raise exception
raise ValueError('A very specific bad thing happened.')

python raise TypeError

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

how to raise the exception in __exit__ python

# The proper procedure is to raise the new exception inside of the __exit__ handler.
# You should not raise the exception that was passed in though; to allow for context manager chaining, in that case you should just return a falsey value from the handler. Raising your own exceptions is however perfectly fine.
# Note that it is better to use the identity test is to verify the type of the passed-in exception:

def __exit__(self, ex_type, ex_val, tb):
    if ex_type is VagueThirdPartyError:
        if ex_val.args[0] == 'foobar':
            raise SpecificException('Foobarred!')

        # Not raising a new exception, but surpressing the current one:
        if ex_val.args[0] == 'eggs-and-ham':
            # ignore this exception
            return True

        if ex_val.args[0] == 'baz':
            # re-raise this exception
            return False

    # No else required, the function exits and `None` is  returned
# You could also use issubclass(ex_type, VagueThirdPartyError) to allow for subclasses of the specific exception.

python raise exception

	# this raises a "NameError"

>>> raise NameError('HiThere')

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: HiThere

python raise exception

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)

Python How to raise an Exception

def raise_an_error(error):
    raise error

raise_an_error(ValueError)