Documentation > API Details (current)

Table of Content

• Functional calls in Python
• HTTP protocols

Python

As pdf2zh is an installed module in Python, we expose two methods for other programs to call in any Python scripts.

For example, if you want translate a document from English to Chinese using Google Translate, you may use the following code:

from pdf2zh import translate, translate_stream

params = {
    'lang_in': 'en',
    'lang_out': 'zh',
    'service': 'google',
    'thread': 4,
}

Translate with files:

(file_mono, file_dual) = translate(files=['example.pdf'], **params)[0]

Translate with stream:

with open('example.pdf', 'rb') as f:
    (stream_mono, stream_dual) = translate_stream(stream=f.read(), **params)

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HTTP

In a more flexible way, you can communicate with the program using HTTP protocols, if:

1. Install and run backend

   pip install pdf2zh[backend]
   pdf2zh --flask
   pdf2zh --celery worker

2. Using HTTP protocols as follows:

   • Submit translate task

     curl http://localhost:11008/v1/translate -F "file=@example.pdf" -F "data={\"lang_in\":\"en\",\"lang_out\":\"zh\",\"service\":\"google\",\"thread\":4}"
     {"id":"d9894125-2f4e-45ea-9d93-1a9068d2045a"}

   • Check Progress

     curl http://localhost:11008/v1/translate/d9894125-2f4e-45ea-9d93-1a9068d2045a
     {"info":{"n":13,"total":506},"state":"PROGRESS"}

   • Check Progress (if finished)

     curl http://localhost:11008/v1/translate/d9894125-2f4e-45ea-9d93-1a9068d2045a
     {"state":"SUCCESS"}

   • Save monolingual file

     curl http://localhost:11008/v1/translate/d9894125-2f4e-45ea-9d93-1a9068d2045a/mono --output example-mono.pdf

   • Save bilingual file

     curl http://localhost:11008/v1/translate/d9894125-2f4e-45ea-9d93-1a9068d2045a/dual --output example-dual.pdf

   • Interrupt if running and delete the task

     curl http://localhost:11008/v1/translate/d9894125-2f4e-45ea-9d93-1a9068d2045a -X DELETE

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