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Googletrans

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Googletrans is a free and unlimited python library that implemented Google Translate API. This uses the Google Translate Ajax API to make calls to such methods as detect and translate.

Compatible with Python 3.8+.

For details refer to the API Documentation.

Features

  • Fast and reliable - it uses the same servers that translate.google.com uses
  • Auto language detection
  • Bulk translations
  • Customizable service URL
  • Async support
  • HTTP/2 support
  • Proxy support
  • Complete type hints

HTTP/2 support

This library uses httpx for HTTP requests so HTTP/2 is supported by default.

You can check if http2 is enabled and working by the ._response.http_version of Translated or Detected object:

>>> translator.translate('테스트')._response.http_version
# 'HTTP/2'

How does this library work

You may wonder why this library works properly, whereas other approaches such like goslate won't work since Google has updated its translation service recently with a ticket mechanism to prevent a lot of crawler programs.

I eventually figure out a way to generate a ticket by reverse engineering on the obfuscated and minified code used by Google to generate such token, and implemented on the top of Python. However, this could be blocked at any time.

Installation

To install, either use things like pip with the package "googletrans" or download the package and put the "googletrans" directory into your python path.

$ pip install googletrans

Basic Usage

If source language is not given, google translate attempts to detect the source language.

>>> import asyncio
>>> from googletrans import Translator
>>>
>>> async def translate_text():
...     async with Translator() as translator:
...         result = await translator.translate('안녕하세요.')
...         print(result)  # <Translated src=ko dest=en text=Good evening. pronunciation=Good evening.>
...
...         result = await translator.translate('안녕하세요.', dest='ja')
...         print(result)  # <Translated src=ko dest=ja text=こんにちは。 pronunciation=Kon'nichiwa.>
...
...         result = await translator.translate('veritas lux mea', src='la')
...         print(result)  # <Translated src=la dest=en text=The truth is my light pronunciation=The truth is my light>
...
>>> asyncio.run(translate_text())

Customize service URL

You can use another google translate domain for translation. If multiple URLs are provided, it then randomly chooses a domain.

>>> from googletrans import Translator
>>> translator = Translator(service_urls=[
      'translate.google.com',
      'translate.google.co.kr',
    ])

Customize service URL to point to standard api

Considering translate.google.<domain> url services use the webapp requiring a token, you can prefer to use the direct api than does not need any token to process. It can solve your problems of unstable token providing processes (refer to issue #234)

>>> from googletrans import Translator
>>> translator = Translator(service_urls=[
      'translate.googleapis.com'
    ])

Advanced Usage (Bulk)

Array can be used to translate a batch of strings in a single method call and a single HTTP session. The exact same method shown above works for arrays as well.

>>> async def translate_bulk():
...     async with Translator() as translator:
...         translations = await translator.translate(['The quick brown fox', 'jumps over', 'the lazy dog'], dest='ko')
...         for translation in translations:
...             print(translation.origin, ' -> ', translation.text)
...             # The quick brown fox  ->  빠른 갈색 여우
...             # jumps over  ->  이상 점프
...             # the lazy dog  ->  게으른 개
...
>>> asyncio.run(translate_bulk())

Language detection

The detect method, as its name implies, identifies the language used in a given sentence.

>>> async def detect_languages():
...     async with Translator() as translator:
...         result = await translator.detect('이 문장은 한글로 쓰여졌습니다.')
...         print(result)  # <Detected lang=ko confidence=0.27041003>
...
...         result = await translator.detect('この文章は日本語で書かれました。')
...         print(result)  # <Detected lang=ja confidence=0.64889508>
...
...         result = await translator.detect('This sentence is written in English.')
...         print(result)  # <Detected lang=en confidence=0.22348526>
...
...         result = await translator.detect('Tiu frazo estas skribita en Esperanto.')
...         print(result)  # <Detected lang=eo confidence=0.10538048>
...
>>> asyncio.run(detect_languages())

GoogleTrans as a command line application

$ translate -h
usage: translate [-h] [-d DEST] [-s SRC] [-c] text

Python Google Translator as a command-line tool

positional arguments:
  text                  The text you want to translate.

optional arguments:
  -h, --help            show this help message and exit
  -d DEST, --dest DEST  The destination language you want to translate.
                        (Default: en)
  -s SRC, --src SRC     The source language you want to translate. (Default:
                        auto)
  -c, --detect

$ translate "veritas lux mea" -s la -d en
[veritas] veritas lux mea
    ->
[en] The truth is my light
[pron.] The truth is my light

$ translate -c "안녕하세요."
[ko, 1] 안녕하세요.

Note on library usage

DISCLAIMER: this is an unofficial library using the web API of translate.google.com and also is not associated with Google.

  • The maximum character limit on a single text is 15k.
  • Due to limitations of the web version of google translate, this API does not guarantee that the library would work properly at all times (so please use this library if you don't care about stability).
  • Important: If you want to use a stable API, I highly recommend you to use Google's official translate API.
  • If you get HTTP 5xx error or errors like #6, it's probably because Google has banned your client IP address.

Versioning

This library follows Semantic Versioning from v2.0.0. Any release versioned 0.x.y is subject to backwards incompatible changes at any time.

Contributing

Contributions are more than welcomed. See CONTRIBUTING.md

License

Googletrans is licensed under the MIT License. The terms are as follows:

The MIT License (MIT)

Copyright (c) 2015 SuHun Han

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.