我这边有个需求需要把一份docx翻译成指定语言的文档并且保存，研究了下，记录。

首先先安装依赖

pip install python-docx==1.1.2 googletrans==4.0.0rc1

 python-docx是用来读取docx的，googletrans使用来翻译的。

googletrans · PyPI

这个是官方文档，额外的用法可以再这里找到

然后就是使用.

传入文件名，后缀，需要翻译成的语言。我这里用的自动检测语言，但是翻译的速度就会慢一点，如果想要达到最快的翻译速度的话，最好就是指定源语言是什么。这样翻译出来需要一点点时间，但是不会丢失格式，约等于完美翻译。

from googletrans import Translatordef translate(self,filename,ext,to_language):after_filename=filename+self._add_suffix(to_language)output_file=os.path.join(self.upload_path, after_filename+ext)if not os.path.exists(output_file):translator = Translator()full_path=os.path.join(self.upload_path, filename+ext)doc = Document(full_path)for paragraph in doc.paragraphs:#读取每个段落，回车为结尾if paragraph.text.strip():translated_text = self._translate_text(paragraph.text, translator,to_language,filename)paragraph.text = translated_text.replace('Besides','') #因为有些时候会奇奇怪怪的出现这个翻译，就临时替换一下，之后再找具体解决方案for table in doc.tables:#读取所有表格内的内容，段落不会读取到表格，所以还要读取一次表格for row in table.rows:for cell in row.cells:if cell.text.strip():translated_text = self._translate_text(cell.text, translator,to_language,filename)cell.text = translated_text.replace('Besides','')doc.save(output_file)return after_filename,extdef _translate_text(self,text:str, translator:Translator,to_language:str,filename:str):translated = translator.translate(text, src=LANGUAGE_KEY.AUTO, dest=to_language)current_app.logger.info(f'====== In Translate {filename}, to language : {to_language} origin text : {text}, translated : {translated.text}')return translated.textdef _add_suffix(self,to_language):return SIGN.UNDERLINE+to_language

如果要获取他所有支持的语言,找这个常量

from googletrans.constants import LANGUAGES

LANGUAGES = {'af': 'afrikaans','sq': 'albanian','am': 'amharic','ar': 'arabic','hy': 'armenian','az': 'azerbaijani','eu': 'basque','be': 'belarusian','bn': 'bengali','bs': 'bosnian','bg': 'bulgarian','ca': 'catalan','ceb': 'cebuano','ny': 'chichewa','zh-cn': 'chinese (simplified)','zh-tw': 'chinese (traditional)','co': 'corsican','hr': 'croatian','cs': 'czech','da': 'danish','nl': 'dutch','en': 'english','eo': 'esperanto','et': 'estonian','tl': 'filipino','fi': 'finnish','fr': 'french','fy': 'frisian','gl': 'galician','ka': 'georgian','de': 'german','el': 'greek','gu': 'gujarati','ht': 'haitian creole','ha': 'hausa','haw': 'hawaiian','iw': 'hebrew','he': 'hebrew','hi': 'hindi','hmn': 'hmong','hu': 'hungarian','is': 'icelandic','ig': 'igbo','id': 'indonesian','ga': 'irish','it': 'italian','ja': 'japanese','jw': 'javanese','kn': 'kannada','kk': 'kazakh','km': 'khmer','ko': 'korean','ku': 'kurdish (kurmanji)','ky': 'kyrgyz','lo': 'lao','la': 'latin','lv': 'latvian','lt': 'lithuanian','lb': 'luxembourgish','mk': 'macedonian','mg': 'malagasy','ms': 'malay','ml': 'malayalam','mt': 'maltese','mi': 'maori','mr': 'marathi','mn': 'mongolian','my': 'myanmar (burmese)','ne': 'nepali','no': 'norwegian','or': 'odia','ps': 'pashto','fa': 'persian','pl': 'polish','pt': 'portuguese','pa': 'punjabi','ro': 'romanian','ru': 'russian','sm': 'samoan','gd': 'scots gaelic','sr': 'serbian','st': 'sesotho','sn': 'shona','sd': 'sindhi','si': 'sinhala','sk': 'slovak','sl': 'slovenian','so': 'somali','es': 'spanish','su': 'sundanese','sw': 'swahili','sv': 'swedish','tg': 'tajik','ta': 'tamil','te': 'telugu','th': 'thai','tr': 'turkish','uk': 'ukrainian','ur': 'urdu','ug': 'uyghur','uz': 'uzbek','vi': 'vietnamese','cy': 'welsh','xh': 'xhosa','yi': 'yiddish','yo': 'yoruba','zu': 'zulu',
}

如果需要手动检测语言，可以调用这个方法.

from googletrans import Translator
from googletrans.models import Detectedtranslator = Translator()
text_d:Detected=translator.detect(some_text)
lang_key=text_d.lang

可以看到他的source code是返回的一个 Detcted,直接.lang就可以拿到语言的key了