def filesize(fileobj):
current = fileobj.tell()<EOL>fileobj.seek(<NUM_LIT:0>, <NUM_LIT:2>)<EOL>end = fileobj.tell()<EOL>fileobj.seek(current)<EOL>return end<EOL>
Return the number of bytes in the fileobj.

    This function seeks to the end of the file, and then back to the original position.