Python aws boto pass变量

上面是代码。问题出在get_命令_调用中，它不是以变量形式传递，而是以字符串形式传递，并在下面传递错误

ssm = boto3.client('ssm' )
            instance = 'i-123123'
            response = ssm.send_command( InstanceIds=[ instance ], DocumentName='AWS-RunShellScript', Comment='slack testing', Parameters={ "commands":[ "hostname" ]  } )
            command_id = response['Command']['CommandId']
            command_id.encode("utf-8")
            output = ssm.get_command_invocation(
                CommandId=command_id,
                InstanceId=instance
                )

但是，如果我单独打印command_id和instance，它们实际上是在打印实际的id

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这个问题的解决方案是什么？

我发现解决方案只是在代码中设置了sleep/wait。

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在代码中使用time.sleep（10）解决了问题

我可能错了，但不应该响应=ssm.send_命令实际上是client.send_命令？ssm=boto3.client（'ssm'）我将其存储在ssm变量中

An error occurred (InvocationDoesNotExist) when calling the GetCommandInvocation operation: : InvocationDoesNotExist
Traceback (most recent call last):
File "/var/task/lambda_function.py", line 137, in lambda_handler
InstanceId=instance
File "/var/runtime/botocore/client.py", line 314, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/var/runtime/botocore/client.py", line 612, in _make_api_call
raise error_class(parsed_response, operation_name)
InvocationDoesNotExist: An error occurred (InvocationDoesNotExist) when calling the GetCommandInvocation operation: