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124 lines
3.8 KiB
124 lines
3.8 KiB
"""
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google translator API
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"""
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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
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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", # key of text in the url
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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):
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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 response.status_code != 200:
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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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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(ch for ch in text.strip() if ch.isalnum())
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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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if __name__ == "__main__":
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trans = GoogleTranslator(source='auto', target='zh-CN')
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res = trans.translate("good")
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print("translation: ", res)
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