如何使用谷歌文档将PDF内容提取到.txt文件中？

Question

如何以编程方式使用Google文档以编程方式从pdf文件中提取文本？我已经准备好知道还有其他选择，但是，我很好奇是否有可能将谷歌文档用于此类目的。

Answer 1

当使用python将PDF数据检索到文本数据时，您可以使用Drive API v3实现它。但它需要2个步骤。

1. 将PDF文件上传为Google文档
2. 将Google文档下载为TXT文件

在此示例中，使用了Python Quickstart。详细信息为https://developers.google.com/drive/v3/web/quickstart/python。 请阅读“第1步：开启云端硬盘API”和“第2步：安装Google客户端库”。如果你已经认识他们，我很抱歉。

使用以下示例脚本时，请修改如下。

1。添加导入

请将以下导入添加到快速入门。

import io
from apiclient.http import MediaFileUpload, MediaIoBaseDownload

2。改变范围

请将范围更改为以下。

SCOPES = 'https://www.googleapis.com/auth/drive'

3。更改main()

请将快速入门的main()更改为此。

示例脚本

示例脚本可以将PDF文件转换为TXT文件。但PDF文件中的图像不能是TXT文件。

def main():
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    service = discovery.build('drive', 'v3', http=http)

    pdffile = 'sample.pdf' # PDF file
    txtfile = 'sample.txt' # Text file

    mime = 'application/vnd.google-apps.document'
    res = service.files().create(
        body={
            'name': pdffile,
            'mimeType': mime
        },
        media_body=MediaFileUpload(pdffile, mimetype=mime, resumable=True)
    ).execute()

    dl = MediaIoBaseDownload(
        io.FileIO(txtfile, 'wb'),
        service.files().export_media(fileId=res['id'], mimeType="text/plain")
    )
    done = False
    while done is False:
        status, done = dl.next_chunk()
    print("Done.")


if __name__ == '__main__':
    main()

如果我误解了你的问题，我很抱歉。

脚本添加了快速入门：

from __future__ import print_function
import httplib2
import os
import io

from apiclient import discovery
from oauth2client import client
from oauth2client import tools
from oauth2client.file import Storage
from apiclient.http import MediaFileUpload, MediaIoBaseDownload

try:
    import argparse
    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
except ImportError:
    flags = None

# If modifying these scopes, delete your previously saved credentials
# at ~/.credentials/drive-python-quickstart.json
SCOPES = 'https://www.googleapis.com/auth/drive'
CLIENT_SECRET_FILE = 'client_secret.json'
APPLICATION_NAME = 'Drive API Python Quickstart'


def get_credentials():
    """Gets valid user credentials from storage.

    If nothing has been stored, or if the stored credentials are invalid,
    the OAuth2 flow is completed to obtain the new credentials.

    Returns:
        Credentials, the obtained credential.
    """
    credential_path = os.path.join("./", 'drive-python-quickstart.json')
    store = Storage(credential_path)
    credentials = store.get()
    if not credentials or credentials.invalid:
        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
        flow.user_agent = APPLICATION_NAME
        if flags:
            credentials = tools.run_flow(flow, store, flags)
        else:  # Needed only for compatibility with Python 2.6
            credentials = tools.run(flow, store)
        print('Storing credentials to ' + credential_path)
    return credentials


def main():
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    service = discovery.build('drive', 'v3', http=http)

    pdffile = '../Downloads/sample.pdf'  # PDF file
    txtfile = '../Downloads/sample.txt'  # Text file

    mime = 'application/vnd.google-apps.document'
    res = service.files().create(
        body={
            'name': pdffile,
            'mimeType': mime
        },
        media_body=MediaFileUpload(pdffile, mimetype=mime, resumable=True)
    ).execute()

    dl = MediaIoBaseDownload(
        io.FileIO(txtfile, 'wb'),
        service.files().export_media(fileId=res['id'], mimeType="text/plain")
    )
    done = False
    while done is False:
        status, done = dl.next_chunk()
    print("Done.")


if __name__ == '__main__':
    main()