def _get_raw_post_data(self):
        try:
            content_length = int(self.environ.get(b"CONTENT_LENGTH"))
        except __HOLE__: # if CONTENT_LENGTH was empty string or not an integer
            raise HttpErrorLengthRequired("A Content-Length header is required.")
        return self.environ[b'wsgi.input'].read(content_length)
dataset/ETHPy150Open kdart/pycopia/WWW/pycopia/WWW/framework.py/HTTPRequest._get_raw_post_data