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115 lines
3.7 KiB
Python
115 lines
3.7 KiB
Python
"""
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linguee 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, Union
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import requests
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from bs4 import BeautifulSoup
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from requests.utils import requote_uri
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from deep_translator.base import BaseTranslator
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from deep_translator.constants import BASE_URLS, LINGUEE_LANGUAGES_TO_CODES
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from deep_translator.exceptions import (
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ElementNotFoundInGetRequest,
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NotValidPayload,
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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 LingueeTranslator(BaseTranslator):
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"""
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class that wraps functions, which use the linguee translator under the hood to translate word(s)
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"""
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def __init__(
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self,
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source: str = "en",
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target: str = "de",
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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("LINGUEE"),
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source=source,
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target=target,
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languages=LINGUEE_LANGUAGES_TO_CODES,
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element_tag="a",
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element_query={"class": "dictLink featured"},
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payload_key=None, # key of text in the url
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)
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def translate(
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self, word: str, return_all: bool = False, **kwargs
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) -> Union[str, List[str]]:
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"""
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function that uses linguee to translate a word
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@param word: word to translate
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@type word: str
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@param return_all: set to True to return all synonym of the translated word
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@type return_all: bool
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@return: str: translated word
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"""
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if self._same_source_target() or is_empty(word):
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return word
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if is_input_valid(word, max_chars=50):
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# %s-%s/translation/%s.html
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url = f"{self._base_url}{self._source}-{self._target}/search/?source={self._source}&query={word}"
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url = requote_uri(url)
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response = requests.get(url, proxies=self.proxies)
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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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elements = soup.find_all(self._element_tag, self._element_query)
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response.close()
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if not elements:
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raise ElementNotFoundInGetRequest(elements)
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filtered_elements = []
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for el in elements:
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try:
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pronoun = el.find(
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"span", {"class": "placeholder"}
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).get_text(strip=True)
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except AttributeError:
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pronoun = ""
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filtered_elements.append(
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el.get_text(strip=True).replace(pronoun, "")
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)
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if not filtered_elements:
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raise TranslationNotFound(word)
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return filtered_elements if return_all else filtered_elements[0]
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def translate_words(self, words: List[str], **kwargs) -> List[str]:
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"""
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translate a batch of words together by providing them in a list
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@param words: list of words you want to translate
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@param kwargs: additional args
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@return: list of translated words
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"""
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if not words:
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raise NotValidPayload(words)
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translated_words = []
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for word in words:
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translated_words.append(self.translate(word=word, **kwargs))
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return translated_words
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