File ".\PySQLWriter.py", line 26, in <module>
cursor.execute(sql, (i, i**2, i**3))
File "c:\users\m\appdata\local\enthought\canopy\user\lib\site-packages\pymysql\cursors.py", line 164, in execute
query = self.mogrify(query, args)
File "c:\users\m\appdata\local\enthought\canopy\user\lib\site-packages\pymysql\cursors.py", line 143, in mogrify
query = query % self._escape_args(args, conn)
TypeError: %d format: a number is required, not str