textract_python_table_parser.py 命令提示符缺少凭据

Question

我正在尝试在 this link 中实施 AWS 的 Textract 导出表建议 我是 AWS 解决方案和命令提示符的新手，所以我正在尝试完全按照他们的建议去做。我在 python 中运行它，所以我使用这段代码：

import os
k=os.system("python textract_python_table_parser.py my_pdf_file_path.pdf")
print(k)

代码运行，我得到一个Image loaded my_pdf_file_path.pdf，但在某些时候它在凭证问题上出现错误：

Traceback (most recent call last):
  File "/Users/santanna_santanna/PycharmProjects/KlooksExplore/PDFWork/textract_python_table_parser.py", line 108, in <module>
    main(file_name)
  File "/Users/santanna_santanna/PycharmProjects/KlooksExplore/PDFWork/textract_python_table_parser.py", line 94, in main
    table_csv = get_table_csv_results(file_name)
  File "/Users/santanna_santanna/PycharmProjects/KlooksExplore/PDFWork/textract_python_table_parser.py", line 53, in get_table_csv_results
    response = client.analyze_document(Document={'Bytes': bytes_test}, FeatureTypes=['TABLES'])
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/client.py", line 316, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/client.py", line 622, in _make_api_call
    operation_model, request_dict, request_context)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/client.py", line 641, in _make_request
    return self._endpoint.make_request(operation_model, request_dict)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/endpoint.py", line 102, in make_request
    return self._send_request(request_dict, operation_model)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/endpoint.py", line 132, in _send_request
    request = self.create_request(request_dict, operation_model)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/endpoint.py", line 116, in create_request
    operation_name=operation_model.name)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/hooks.py", line 356, in emit
    return self._emitter.emit(aliased_event_name, **kwargs)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/hooks.py", line 228, in emit
    return self._emit(event_name, kwargs)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/hooks.py", line 211, in _emit
    response = handler(**kwargs)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/signers.py", line 90, in handler
    return self.sign(operation_name, request)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/signers.py", line 160, in sign
    auth.add_auth(request)
  File "/Users/santanna_santanna/anaconda3/lib/python3.6/site-packages/botocore/auth.py", line 357, in add_auth
    raise NoCredentialsError
botocore.exceptions.NoCredentialsError: Unable to locate credentials

我知道我没有传递任何凭据，这是很自然的事情，但是我应该在哪里传递它以及使用 python os 的正确语法是什么？亚马逊的例子没有说明这一点。

Answer 1

这取决于你在哪里运行你的代码，例如：

• 本地计算机 - 可以使用 aws configure CLI 来设置您的凭据
• EC2 实例 - 使用 instance role
• lambda 函数 - 使用 lambda execution role