code: def sanitize_params(method, **kwargs):
          
          # items which does not have a key starting with `_`
          items = [(key, value) for key, value in kwargs.items()
                   if not key.startswith("_")]
          params, skip_params = {}, False
  
          for key, value in items:
              # binary data
              if hasattr(value, 'read') or isinstance(value, bytes):
                  params[key] = value
                  # The params won't be used to make the signature
                  skip_params = True
  
              # booleans conversion
              elif isinstance(value, bool):
                  params[key] = "true" if value else "false"
  
              # iterables conversion
              elif isinstance(value, iterable):
                  params[key] = ",".join(map(str, value))
  
              # skip params with value None
              elif value is None:
                  pass
  
              # the rest is converted to str
              # (make sure you don't send something wrong)
              else:
                  params[key] = str(value)
  
          # dict with other items (+ strip "_" from keys)
          kwargs = {key[1:]: value for key, value in kwargs.items()
                    if key.startswith("_")}
  
          if method == "post" and not kwargs.get('data', None) and params:
              kwargs['data'] = params  # post requests use the data argument
  
          elif not kwargs.get('params', None) and params:
              kwargs['params'] = params
  
          return kwargs, skip_params
docs: Request params can be extracted from the ``**kwargs``
  
          Arguments starting with `_` will be stripped from it, so they
          can be used as an argument for the request
          (eg. "_headers" → "headers" in the kwargs returned by this
          function while "headers" would be inserted into the parameters
          of the request)
  
          Parameters
          ----------
          method : str
              method to use to make the request
          kwargs : dict
              Keywords arguments given to the request
  
          Returns
          -------
          dict
              New requests parameters, correctly formatted