@@ -27,7 +27,7 @@ class BufferedIOBase(object):
2727asciiUppercaseBytes = frozenset ([item .encode ("ascii" )for item in asciiUppercase ])
2828spacesAngleBrackets = spaceCharactersBytes | frozenset ([b">" ,b"<" ])
2929
30- invalid_unicode_re = re .compile ("[\u0001 -\u0008 \u000B \u000E -\u001F \u007F -\u009F \uD800 -\uDFFF \uFDD0 -\uFDEF \uFFFE \uFFFF \U0001FFFE \U0001FFFF \U0002FFFE \U0002FFFF \U0003FFFE \U0003FFFF \U0004FFFE \U0004FFFF \U0005FFFE \U0005FFFF \U0006FFFE \U0006FFFF \U0007FFFE \U0007FFFF \U0008FFFE \U0008FFFF \U0009FFFE \U0009FFFF \U000AFFFE \U000AFFFF \U000BFFFE \U000BFFFF \U000CFFFE \U000CFFFF \U000DFFFE \U000DFFFF \U000EFFFE \U000EFFFF \U000FFFFE \U000FFFFF \U0010FFFE \U0010FFFF ]" )
30+ invalid_unicode_re = re .compile ("[\u0001 -\u0008 \u000B \u000E -\u001F \u007F -\u009F \uD800 -\uDFFF \uFDD0 -\uFDEF \uFFFE \uFFFF \U0001FFFE \U0001FFFF \U0002FFFE \U0002FFFF \U0003FFFE \U0003FFFF \U0004FFFE \U0004FFFF \U0005FFFE \U0005FFFF \U0006FFFE \U0006FFFF \U0007FFFE \U0007FFFF \U0008FFFE \U0008FFFF \U0009FFFE \U0009FFFF \U000AFFFE \U000AFFFF \U000BFFFE \U000BFFFF \U000CFFFE \U000CFFFF \U000DFFFE \U000DFFFF \U000EFFFE \U000EFFFF \U000FFFFE \U000FFFFF \U0010FFFE \U0010FFFF ]" )# noqa
3131
3232non_bmp_invalid_codepoints = set ([0x1FFFE ,0x1FFFF ,0x2FFFE ,0x2FFFF ,0x3FFFE ,
33330x3FFFF ,0x4FFFE ,0x4FFFF ,0x5FFFE ,0x5FFFF ,
@@ -118,6 +118,10 @@ def _readFromBuffer(self, bytes):
118118
119119
120120def HTMLInputStream (source ,encoding = None ,parseMeta = True ,chardet = True ):
121+ if (hasattr (source ,'unget' )and hasattr (source ,'charsUntil' )and
122+ hasattr (source ,'position' )and hasattr (source ,'char' )and
123+ hasattr (source ,'reset' )and hasattr (source ,'errors' )):
124+ return source
121125if hasattr (source ,"read" ):
122126isUnicode = isinstance (source .read (0 ),text_type )
123127else :