inputstream.py 文件源码

def HTMLInputStream(source, encoding=None, parseMeta=True, chardet=True):
    if isinstance(source, http_client.HTTPResponse):
        # Work around Python bug #20007: read(0) closes the connection.
        # http://bugs.python.org/issue20007
        isUnicode = False
    elif hasattr(source, "read"):
        isUnicode = isinstance(source.read(0), text_type)
    else:
        isUnicode = isinstance(source, text_type)

    if isUnicode:
        if encoding is not None:
            raise TypeError("Cannot explicitly set an encoding with a unicode string")

        return HTMLUnicodeInputStream(source)
    else:
        return HTMLBinaryInputStream(source, encoding, parseMeta, chardet)