web2py to do so import os command="psql -U marcelo -c select call_inicio,call_duracion,call_timedura,call_num_destino,call_dialstatus,call_valor,call_ip from llamadas_moviles WHERE call_fecha >= '2010-7-5' and call_fecha <= '2010-7-11' order by call_inicio" chips > /var/www/downloads/ 13072010.csv" os.system(command)
i get error in form