How to use the prawcore.ReadOnlyAuthorizer function in prawcore

def test_initialize__with_untrusted_authenticator(self):
        authenticator = prawcore.UntrustedAuthenticator(REQUESTOR, CLIENT_ID)
        self.assertRaises(
            prawcore.InvalidInvocation,
            prawcore.ReadOnlyAuthorizer,
            authenticator,
        )

def readonly_authorizer(refresh=True, requestor=REQUESTOR):
    authenticator = prawcore.TrustedAuthenticator(
        requestor, CLIENT_ID, CLIENT_SECRET
    )
    authorizer = prawcore.ReadOnlyAuthorizer(authenticator)
    if refresh:
        authorizer.refresh()
    return authorizer

def _prepare_trusted_prawcore(self, requestor):
        authenticator = TrustedAuthenticator(
            requestor,
            self.config.client_id,
            self.config.client_secret,
            self.config.redirect_uri,
        )
        read_only_authorizer = ReadOnlyAuthorizer(authenticator)
        self._read_only_core = session(read_only_authorizer)

        if self.config.username and self.config.password:
            script_authorizer = ScriptAuthorizer(
                authenticator, self.config.username, self.config.password
            )
            self._core = self._authorized_core = session(script_authorizer)
        elif self.config.refresh_token:
            authorizer = Authorizer(authenticator, self.config.refresh_token)
            self._core = self._authorized_core = session(authorizer)
        else:
            self._core = self._read_only_core

def main():
    """Provide the program's entry point when directly executed."""
    if len(sys.argv) != 2:
        print("Usage: {} USERNAME".format(sys.argv[0]))
        return 1

    caching_requestor = prawcore.Requestor(
        "prawcore_device_id_auth_example", session=CachingSession()
    )
    authenticator = prawcore.TrustedAuthenticator(
        caching_requestor,
        os.environ["PRAWCORE_CLIENT_ID"],
        os.environ["PRAWCORE_CLIENT_SECRET"],
    )
    authorizer = prawcore.ReadOnlyAuthorizer(authenticator)
    authorizer.refresh()

    user = sys.argv[1]
    with prawcore.session(authorizer) as session:
        data1 = session.request("GET", "/api/v1/user/{}/trophies".format(user))

    with prawcore.session(authorizer) as session:
        data2 = session.request("GET", "/api/v1/user/{}/trophies".format(user))

    for trophy in data1["data"]["trophies"]:
        description = trophy["data"]["description"]
        print(
            "Original:",
            trophy["data"]["name"]
            + (" ({})".format(description) if description else ""),
        )

def main():
    """Provide the program's entry point when directly executed."""
    if len(sys.argv) != 2:
        print("Usage: {} USERNAME".format(sys.argv[0]))
        return 1

    authenticator = prawcore.TrustedAuthenticator(
        prawcore.Requestor("prawcore_read_only_example"),
        os.environ["PRAWCORE_CLIENT_ID"],
        os.environ["PRAWCORE_CLIENT_SECRET"],
    )
    authorizer = prawcore.ReadOnlyAuthorizer(authenticator)
    authorizer.refresh()

    user = sys.argv[1]
    with prawcore.session(authorizer) as session:
        data = session.request("GET", "/api/v1/user/{}/trophies".format(user))

    for trophy in data["data"]["trophies"]:
        description = trophy["data"]["description"]
        print(
            trophy["data"]["name"]
            + (" ({})".format(description) if description else "")
        )

    return 0