使用Googletrans时出现NoneType属性错误及降级后报错原因排查

用户代码 #

from PIL import Image
import pytesseract
import googletrans
from googletrans import Translator


translator = Translator()

pytesseract.pytesseract.tesseract_cmd = r"C:\\Program Files\\Tesseract-OCR\\tesseract.exe"

with open("emre.txt", mode = "w+") as f:
     f.write(pytesseract.image_to_string("01-361.jpg"))

s = open("emre.txt", "r")

if s.mode == "r":
    ceviri = s.read()
    print(ceviri)

result = translator.translate(ceviri, src= "en", dest="tr")

with open("çeviri.txt", "w") as k:
    k.write(result.text)

第一次报错信息 #

Traceback (most recent call last):
  File "c:\Users\usr\amazon_py\çeviri.py", line 20, in <module>
    result = translator.translate(ceviri, src= "en", dest="tr")
  File "C:\Users\usr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\googletrans\client.py", line 182, in translate
    data = self._translate(text, dest, src, kwargs)
  File "C:\Users\usr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\googletrans\client.py", line 78, in _translate
    token = self.token_acquirer.do(text)
  File "C:\Users\usr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\googletrans\gtoken.py", line 194, in do
    self._update()
  File "C:\Users\usr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\googletrans\gtoken.py", line 62, in _update
    code = self.RE_TKK.search(r.text).group(1).replace('var ', '')
AttributeError: 'NoneType' object has no attribute 'group'

降级版本后报错信息 #

File "c:\Users\usr\amazon_py\çeviri.py", line 20, in <module>
    emre = translator.translate(ceviri, src= "en", dest="tr")
  File "C:\Users\usr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\googletrans\client.py", line 219, in translate
    parsed = json.loads(data[0][2])
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2288.0_x64__qbz5n2kfra8p0\lib\json\__init__.py", line 339, in loads
    raise TypeError(f'the JSON object must be str, bytes or bytearray, '
TypeError: the JSON object must be str, bytes or bytearray, not NoneType

报错原因分析 #

第一个错误（AttributeError）

Googletrans依赖网页版Google翻译的API，但Google会不定期更新网页的token生成逻辑。你使用的Googletrans版本中的token获取代码，无法在当前Google翻译网页中找到匹配的TKK参数，导致RE_TKK.search(r.text)返回None，调用group()方法时触发异常。

第二个错误（TypeError）

降级版本后，虽然token问题可能被部分修复，但仍存在以下可能：

• 网络请求失败：无法连接到Google翻译服务器，导致返回的数据为空（None），json.loads无法解析空对象。
• 版本兼容性：降级后的Googletrans版本与你使用的Python 3.10存在兼容性问题，导致API请求逻辑异常，返回无效数据。
• OCR结果为空：如果pytesseract.image_to_string识别图片后得到空字符串，传给翻译接口可能引发服务端返回异常，最终导致客户端拿到空数据。

内容的提问来源于stack exchange，提问作者Shaumne