379 # Python 3.5's json.load and json.loads require str. We polyfill its

   379 json_loads = json.loads

   380 # code for detecting encoding from bytes.

   381 if sys.version_info[0:2] < (3, 6):

   382 

   383     def _detect_encoding(b):

   384         bstartswith = b.startswith

   385         if bstartswith((codecs.BOM_UTF32_BE, codecs.BOM_UTF32_LE)):

   386             return 'utf-32'

   387         if bstartswith((codecs.BOM_UTF16_BE, codecs.BOM_UTF16_LE)):

   388             return 'utf-16'

   389         if bstartswith(codecs.BOM_UTF8):

   390             return 'utf-8-sig'

   391 

   392         if len(b) >= 4:

   393             if not b[0]:

   394                 # 00 00 -- -- - utf-32-be

   395                 # 00 XX -- -- - utf-16-be

   396                 return 'utf-16-be' if b[1] else 'utf-32-be'

   397             if not b[1]:

   398                 # XX 00 00 00 - utf-32-le

   399                 # XX 00 00 XX - utf-16-le

   400                 # XX 00 XX -- - utf-16-le

   401                 return 'utf-16-le' if b[2] or b[3] else 'utf-32-le'

   402         elif len(b) == 2:

   403             if not b[0]:

   404                 # 00 XX - utf-16-be

   405                 return 'utf-16-be'

   406             if not b[1]:

   407                 # XX 00 - utf-16-le

   408                 return 'utf-16-le'

   409         # default

   410         return 'utf-8'

   411 

   412     def json_loads(s, *args, **kwargs):

   413         if isinstance(s, (bytes, bytearray)):

   414             s = s.decode(_detect_encoding(s), 'surrogatepass')

   415 

   416         return json.loads(s, *args, **kwargs)

   417 

   418 else:

   419     json_loads = json.loads