为什么AWS告诉我BucketAlreadyExists不存在？

我正在使用适用于Python的AWS开发工具包（boto3）自动执行一些AWS服务的设置，并且遇到了创建S3存储桶的非常简单的问题。

我仔细检查了以下内容：

• 在中~/.aws/credentials，我设置了访问密钥ID和秘密访问密钥。

• 此访问密钥ID /秘密访问密钥用于属于组且附加了以下策略的帐户：

  {
    "Version": "2012-10-17",
    "Statement": [
      {
        "Effect": "Allow",
        "Action": "*",
        "Resource": "*"
      }
    ]
  }
  

• 我正在尝试使用以下名称创建存储桶的名称不存在

但是，当我尝试运行此非常简单的操作时，它失败了：

>>> import boto3
>>> client = boto3.client('s3')
>>> response = client.create_bucket('staging')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/yiqing/Repos/ansible-home/roles/osx/files/virtualenvs/obaku/lib/python2.7/site-packages/botocore/client.py", line 157, in _api_call
    "%s() only accepts keyword arguments." % py_operation_name)
TypeError: create_bucket() only accepts keyword arguments.
>>> response = client.create_bucket(Bucket='staging')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/yiqing/Repos/ansible-home/roles/osx/files/virtualenvs/obaku/lib/python2.7/site-packages/botocore/client.py", line 159, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Users/yiqing/Repos/ansible-home/roles/osx/files/virtualenvs/obaku/lib/python2.7/site-packages/botocore/client.py", line 494, in _make_api_call
    raise ClientError(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occurred (BucketAlreadyExists) when calling the CreateBucket operation: The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again.

我觉得我很想念某些东西，但是我一生都无法想像这可能是什么，或者我做错了什么。