# Buggy code
def main():
    argument_spec = dict(
        name=dict(required=True),
        description=dict(),
        inventory=dict(required=True),
        enabled=dict(type="bool", default=True),
        variables=dict(),
        state=dict(choices=["present", "absent"], default="present"),
    )
    module = TowerModule(argument_spec=argument_spec, supports_check_mode=True)

    name = module.params.get("name")
    description = module.params.get("description")
    inventory = module.params.get("inventory")
    enabled = module.params.get("enabled")
    state = module.params.get("state")

    variables = module.params.get("variables")
    if variables:
        if variables.startswith("@"):
            filename = os.path.expanduser(variables[1:])
            with open(filename, "r") as f:
                variables = f.read()

    json_output = {"host": name, "state": state}

    tower_auth = tower_auth_config(module)
    with settings.runtime_values(**tower_auth):
        tower_check_mode(module)
        host = tower_cli.get_resource("host")

        try:
            inv_res = tower_cli.get_resource("inventory")
            inv = inv_res.get(name=inventory)

            if state == "present":
                result = host.modify(
                    name=name,
                    inventory=inv["id"],
                    enabled=enabled,
                    variables=variables,
                    description=description,
                    create_on_missing=True,
                )
                json_output["id"] = result["id"]
            elif state == "absent":
                result = host.delete(name=name, inventory=inv["id"])
        except exc.NotFound as excinfo:
            module.fail_json(
                msg="Failed to update host, inventory not found: {0}".format(excinfo),
                changed=False,
            )
        except (exc.ConnectionError, exc.BadRequest) as excinfo:
            module.fail_json(
                msg="Failed to update host: {0}".format(excinfo), changed=False
            )

    json_output["changed"] = result["changed"]
    module.exit_json(**json_output)


# Traceback (tower_cli.exceptions.AuthError)
TASK [Set AWX admin account] *******************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: tower_cli.exceptions.AuthError: Invalid Tower authentication credentials (HTTP 401).
fatal: [awx1]: FAILED! => changed=false
module_stderr: |-
Traceback (most recent call last):
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 113, in <module>
_ansiballz_main()
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 105, in _ansiballz_main
invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 48, in invoke_module
imp.load_module('__main__', mod, module, MOD_DESC)
File "/tmp/ansible_tower_user_payload_uMnpMh/__main__.py", line 131, in <module>
File "/tmp/ansible_tower_user_payload_uMnpMh/__main__.py", line 118, in main
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 698, in modify
return self.write(pk, create_on_missing=create_on_missing, force_on_exists=True, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 361, in write
**kwargs
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 223, in _lookup
existing_data = self.get(include_debug_header=include_debug_header, **read_params)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 486, in get
response = self.read(pk=pk, fail_on_no_results=True, fail_on_multiple_results=True, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 288, in read
r = client.get(url, params=kwargs)
File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 521, in get
return self.request('GET', url, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/api.py", line 255, in request
raise exc.AuthError('Invalid Tower authentication credentials (HTTP 401).')
tower_cli.exceptions.AuthError: Invalid Tower authentication credentials (HTTP 401).
module_stdout: ''
msg: |-
MODULE FAILURE
See stdout/stderr for the exact error
rc: 1

# Fixed code
def main():
    argument_spec = dict(
        name=dict(required=True),
        description=dict(),
        inventory=dict(required=True),
        enabled=dict(type="bool", default=True),
        variables=dict(),
        state=dict(choices=["present", "absent"], default="present"),
    )
    module = TowerModule(argument_spec=argument_spec, supports_check_mode=True)

    name = module.params.get("name")
    description = module.params.get("description")
    inventory = module.params.get("inventory")
    enabled = module.params.get("enabled")
    state = module.params.get("state")

    variables = module.params.get("variables")
    if variables:
        if variables.startswith("@"):
            filename = os.path.expanduser(variables[1:])
            with open(filename, "r") as f:
                variables = f.read()

    json_output = {"host": name, "state": state}

    tower_auth = tower_auth_config(module)
    with settings.runtime_values(**tower_auth):
        tower_check_mode(module)
        host = tower_cli.get_resource("host")

        try:
            inv_res = tower_cli.get_resource("inventory")
            inv = inv_res.get(name=inventory)

            if state == "present":
                result = host.modify(
                    name=name,
                    inventory=inv["id"],
                    enabled=enabled,
                    variables=variables,
                    description=description,
                    create_on_missing=True,
                )
                json_output["id"] = result["id"]
            elif state == "absent":
                result = host.delete(name=name, inventory=inv["id"])
        except exc.NotFound as excinfo:
            module.fail_json(
                msg="Failed to update host, inventory not found: {0}".format(excinfo),
                changed=False,
            )
        except (exc.ConnectionError, exc.BadRequest, exc.AuthError) as excinfo:
            module.fail_json(
                msg="Failed to update host: {0}".format(excinfo), changed=False
            )

    json_output["changed"] = result["changed"]
    module.exit_json(**json_output)