# Buggy code
def main():
    argument_spec = ec2_argument_spec()
    argument_spec.update(
        dict(
            name=dict(required=True),
            schedule_expression=dict(),
            event_pattern=dict(),
            state=dict(choices=["present", "disabled", "absent"], default="present"),
            description=dict(),
            role_arn=dict(),
            targets=dict(type="list", default=[]),
        )
    )
    module = AnsibleModule(argument_spec=argument_spec)

    if not HAS_BOTO3:
        module.fail_json(msg="boto3 required for this module")

    rule_data = dict(
        [(rf, module.params.get(rf)) for rf in CloudWatchEventRuleManager.RULE_FIELDS]
    )
    targets = module.params.get("targets")
    state = module.params.get("state")

    cwe_rule = CloudWatchEventRule(
        module, client=get_cloudwatchevents_client(module), **rule_data
    )
    cwe_rule_manager = CloudWatchEventRuleManager(cwe_rule, targets)

    if state == "present":
        cwe_rule_manager.ensure_present()
    elif state == "disabled":
        cwe_rule_manager.ensure_disabled()
    elif state == "absent":
        cwe_rule_manager.ensure_absent()
    else:
        module.fail_json(msg="Invalid state '{0}' provided".format(state))

    module.exit_json(**cwe_rule_manager.fetch_aws_state())


# Traceback (NameError)
The full traceback is:
Traceback (most recent call last):
File "/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py", line 427, in <module>
main()
File "/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py", line 415, in main
cwe_rule_manager.ensure_present()
File "/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py", line 267, in ensure_present
rule_description = self.rule.describe()
File "/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py", line 145, in describe
except botocore.exceptions.ClientError as e:
NameError: global name 'botocore' is not defined

fatal: [localhost]: FAILED! => {
"changed": false,
"failed": true,
"module_stderr": "Traceback (most recent call last):\n  File \"/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py\", line 427, in <module>\n    main()\n  File \"/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py\", line 415, in main\n    cwe_rule_manager.ensure_present()\n  File \"/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py\", line 267, in ensure_present\n    rule_description = self.rule.describe()\n  File \"/var/folders/2d/bq5mpnnn38b06hwfr4ck8q1w9nfwpk/T/ansible_Zao6N2/ansible_module_cloudwatchevent_rule.py\", line 145, in describe\n    except botocore.exceptions.ClientError as e:\nNameError: global name 'botocore' is not defined\n",
"module_stdout": "",
"msg": "MODULE FAILURE",
"rc": 0
}

# Fixed code
def main():
    argument_spec = ec2_argument_spec()
    argument_spec.update(
        dict(
            name=dict(required=True),
            schedule_expression=dict(),
            event_pattern=dict(),
            state=dict(choices=["present", "disabled", "absent"], default="present"),
            description=dict(),
            role_arn=dict(),
            targets=dict(type="list", default=[]),
        )
    )
    module = AnsibleAWSModule(argument_spec=argument_spec)

    rule_data = dict(
        [(rf, module.params.get(rf)) for rf in CloudWatchEventRuleManager.RULE_FIELDS]
    )
    targets = module.params.get("targets")
    state = module.params.get("state")

    cwe_rule = CloudWatchEventRule(
        module, client=get_cloudwatchevents_client(module), **rule_data
    )
    cwe_rule_manager = CloudWatchEventRuleManager(cwe_rule, targets)

    if state == "present":
        cwe_rule_manager.ensure_present()
    elif state == "disabled":
        cwe_rule_manager.ensure_disabled()
    elif state == "absent":
        cwe_rule_manager.ensure_absent()
    else:
        module.fail_json(msg="Invalid state '{0}' provided".format(state))

    module.exit_json(**cwe_rule_manager.fetch_aws_state())