我有这段代码，可以从S3读取.txt文件，并使用pandas将该文件转换为.csv：
file = pd.read_csv(f's3://{bucket_name}/{bucket_key}', sep=':', error_bad_lines=False)
file.to_csv(f's3://{bucket_name}/file_name.csv')
我已经给IAM角色提供了读写权限，但仍然在.to_csv函数中出现错误：
Anonymous access is forbidden for this operation: PermissionError
更新：EC2日志中的完整错误如下：
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/s3fs/core.py", line 446, in _mkdir
await self.s3.create_bucket(**params)
File "/usr/local/lib/python3.6/dist-packages/aiobotocore/client.py", line 134, in _make_api_call
raise error_class(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occurred (AccessDenied) when calling the CreateBucket operation: Anonymous access is forbidden for this operation
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "convert_file_instance.py", line 92, in <module>
main()
File "convert_file_instance.py", line 36, in main
raise e
File "convert_file_instance.py", line 30, in main
file.to_csv(f's3://{bucket_name}/file_name.csv')
File "/usr/local/lib/python3.6/dist-packages/pandas/core/generic.py", line 3165, in to_csv
decimal=decimal,
File "/usr/local/lib/python3.6/dist-packages/pandas/io/formats/csvs.py", line 67, in __init__
path_or_buf, encoding=encoding, compression=compression, mode=mode
File "/usr/local/lib/python3.6/dist-packages/pandas/io/common.py", line 233, in get_filepath_or_buffer
filepath_or_buffer, mode=mode or "rb", **(storage_options or {})
File "/usr/local/lib/python3.6/dist-packages/fsspec/core.py", line 399, in open
**kwargs
File "/usr/local/lib/python3.6/dist-packages/fsspec/core.py", line 254, in open_files
[fs.makedirs(parent, exist_ok=True) for parent in parents]
File "/usr/local/lib/python3.6/dist-packages/fsspec/core.py", line 254, in <listcomp>
[fs.makedirs(parent, exist_ok=True) for parent in parents]
File "/usr/local/lib/python3.6/dist-packages/s3fs/core.py", line 460, in makedirs
self.mkdir(path, create_parents=True)
File "/usr/local/lib/python3.6/dist-packages/fsspec/asyn.py", line 100, in wrapper
return maybe_sync(func, self, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/fsspec/asyn.py", line 80, in maybe_sync
return sync(loop, func, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/fsspec/asyn.py", line 51, in sync
raise exc.with_traceback(tb)
File "/usr/local/lib/python3.6/dist-packages/fsspec/asyn.py", line 35, in f
result[0] = await future
File "/usr/local/lib/python3.6/dist-packages/s3fs/core.py", line 450, in _mkdir
raise translate_boto_error(e) from e
PermissionError: Anonymous access is forbidden for this operation
我不知道为什么它要创建存储桶？而且我已经给 Lambda 角色提供了 S3 的完全访问权限。
请问有人能告诉我我错过了什么吗？
谢谢。