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""" |
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google translator API |
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""" |
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__copyright__ = "Copyright (C) 2020 Nidhal Baccouri" |
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from typing import List, Optional |
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import requests |
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from bs4 import BeautifulSoup |
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from deep_translator.base import BaseTranslator |
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from deep_translator.constants import BASE_URLS |
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from deep_translator.exceptions import ( |
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RequestError, |
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TooManyRequests, |
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TranslationNotFound, |
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) |
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from deep_translator.validate import is_empty, is_input_valid, request_failed |
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class GoogleTranslator(BaseTranslator): |
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""" |
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class that wraps functions, which use Google Translate under the hood to translate text(s) |
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""" |
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def __init__( |
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self, |
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source: str = "auto", |
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target: str = "en", |
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proxies: Optional[dict] = None, |
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**kwargs |
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): |
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""" |
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@param source: source language to translate from |
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@param target: target language to translate to |
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""" |
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self.proxies = proxies |
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super().__init__( |
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base_url=BASE_URLS.get("GOOGLE_TRANSLATE"), |
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source=source, |
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target=target, |
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element_tag="div", |
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element_query={"class": "t0"}, |
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payload_key="q", |
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**kwargs |
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) |
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self._alt_element_query = {"class": "result-container"} |
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def translate(self, text: str, **kwargs) -> str: |
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""" |
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function to translate a text |
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@param text: desired text to translate |
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@return: str: translated text |
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""" |
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if is_input_valid(text, max_chars=5000): |
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text = text.strip() |
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if self._same_source_target() or is_empty(text): |
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return text |
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self._url_params["tl"] = self._target |
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self._url_params["sl"] = self._source |
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if self.payload_key: |
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self._url_params[self.payload_key] = text |
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response = requests.get( |
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self._base_url, params=self._url_params, proxies=self.proxies |
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) |
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if response.status_code == 429: |
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raise TooManyRequests() |
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if request_failed(status_code=response.status_code): |
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raise RequestError() |
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soup = BeautifulSoup(response.text, "html.parser") |
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element = soup.find(self._element_tag, self._element_query) |
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response.close() |
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if not element: |
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element = soup.find(self._element_tag, self._alt_element_query) |
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if not element: |
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raise TranslationNotFound(text) |
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if element.get_text(strip=True) == text.strip(): |
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to_translate_alpha = "".join( |
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ch for ch in text.strip() if ch.isalnum() |
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) |
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translated_alpha = "".join( |
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ch for ch in element.get_text(strip=True) if ch.isalnum() |
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) |
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if ( |
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to_translate_alpha |
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and translated_alpha |
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and to_translate_alpha == translated_alpha |
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): |
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self._url_params["tl"] = self._target |
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if "hl" not in self._url_params: |
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return text.strip() |
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del self._url_params["hl"] |
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return self.translate(text) |
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else: |
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return element.get_text(strip=True) |
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def translate_file(self, path: str, **kwargs) -> str: |
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""" |
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translate directly from file |
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@param path: path to the target file |
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@type path: str |
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@param kwargs: additional args |
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@return: str |
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""" |
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return self._translate_file(path, **kwargs) |
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def translate_batch(self, batch: List[str], **kwargs) -> List[str]: |
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""" |
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translate a list of texts |
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@param batch: list of texts you want to translate |
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@return: list of translations |
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""" |
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return self._translate_batch(batch, **kwargs) |
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