UnicodeDecodeError当试图通过python-telegram-bot发送照片

Question

我使用python-telegram-bot与Python 2.7。右为文档建议，这是我用它来从磁盘发送照片的方法：

bot.sendPhoto(update.message.chat_id, photo=open(card.image.path, 'rb')) 

哪里card.image.path是JPG文件完整路径。当执行这个方法时，我得到UnicodeDecode错误。请参阅下面的完整回溯。

Traceback (most recent call last): 
    File "/projects/gcards/venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 149, in get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 147, in get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view 
    return view_func(*args, **kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view 
    return self.dispatch(request, *args, **kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/django/views/generic/base.py", line 88, in dispatch 
    return handler(request, *args, **kwargs) 
    File "./frontend/telegram/views/callback.py", line 31, in post 
    bot_commands.send_card(bot, update, card=card) 
    File "./frontend/telegram/views/commands.py", line 22, in send_card 
    post_message = bot.sendPhoto(update.message.chat_id, photo=open(card.image.path, 'rb')) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/bot.py", line 128, in decorator 
    result = func(self, *args, **kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/bot.py", line 145, in decorator 
    return Bot._post_message(url, data, kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/bot.py", line 175, in _post_message 
    network_delay=network_delay) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/utils/request.py", line 77, in decorator 
    return func(*args, **kwargs) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/utils/request.py", line 165, in post 
    data=data.to_form(), 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/inputfile.py", line 147, in to_form 
    return InputFile._parse(form) 
    File "/projects/gcards/venv/lib/python2.7/site-packages/telegram/inputfile.py", line 165, in _parse 
    return '\r\n'.join(form) 
UnicodeDecodeError: 'ascii' codec can't decode byte 0xff in position 0: ordinal not in range(128) 

我调查了这个库，据我了解，它无法解码上传的文件。我试过这样的东西：

with io.open(card.image.path, 'r', encoding='utf8') as photo: 
      bot.sendPhoto(update.message.chat_id, photo=photo.read()) 

但是，这导致了另一种编码错误。关于如何上传照片的任何想法？

UPDATE

至于我整理出来 - sendPhoto（）把chat_id和照片到数据字典，这里是从回溯结束库方法：

的一个中使用data.to_form（）

def to_form(self): 
     """ 
     Returns: 
      str: 
     """ 
     form = [] 
     form_boundary = '--' + self.boundary 

     # Add data fields 
     for name, value in self.data.items(): 
      form.extend([ 
       form_boundary, 
       'Content-Disposition: form-data; name="%s"' % name, 
       '', 
       str(value) 
      ]) 

     # Add input_file to upload 
     form.extend([ 
      form_boundary, 
      'Content-Disposition: form-data; name="%s"; filename="%s"' % (
       self.input_name, self.filename 
      ), 
      'Content-Type: %s' % self.mimetype, 
      '', 
      self.input_file_content 
     ]) 

     form.append('--' + self.boundary + '--') 
     form.append('') 

     return InputFile._parse(form) 

而InputFile._parse（形式）

def _parse(form): 
    """ 
    Returns: 
     str: 
    """ 
    if sys.version_info > (3,): 
     # on Python 3 form needs to be byte encoded 
     encoded_form = [] 
     for item in form: 
      try: 
       encoded_form.append(item.encode()) 
      except AttributeError: 
       encoded_form.append(item) 

     return b'\r\n'.join(encoded_form) 
    return '\r\n'.join(form) 

Answer 1

检查你的card.image.path是否没有Unicode字符，如果有的话，我建议编码为UTF-8。请查阅link了解更多信息。