Hacky fix for #207

Author: TimSC

oauth2/__init__.py

@@ -353,6 +353,7 @@ def __init__(self, method=HTTP_METHOD, url=None, parameters=None,
             for k, v in parameters.items():
                 k = to_unicode(k)
                 v = to_unicode_optional_iterator(v)
+
                 self[k] = v
         self.body = body
         self.is_form_encoded = is_form_encoded
@@ -540,6 +541,7 @@ def from_request(cls, http_method, http_url, headers=None, parameters=None,
         # GET or POST query string.
         if query_string:
             query_params = cls._split_url_string(query_string)
+
             parameters.update(query_params)
 
         # URL parameters.
@@ -757,6 +759,8 @@ def _check_signature(self, request, consumer, token):
         signature = request.get('oauth_signature')
         if signature is None:
             raise MissingSignature('Missing oauth_signature.')
+        if isinstance(signature, str):
+            signature = signature.encode('ascii', 'ignore')
 
         # Validate the signature.
         valid = signature_method.check(request, consumer, token, signature)