Error: not enough arguments for format string

Code python:

def _getnametahlili(self, user, fromDate, toDate):

sql = " SELECT aaa.name,round(sum(aal.unit_amount)) FROM                              account_analytic_account as aaa,
account_analytic_line as aal
WHERE aaa.id=aal.account_id and aal.user_id=%d and aal.date BETWEEN \'%s\' AND \'%s\' Group By aaa.name
except
SELECT aaa.name,round(sum(aal.unit_amount)) FROM account_analytic_account as aaa
inner join account_analytic_line as aal on aal.account_id=aaa.id
inner join project_project as pp on pp.analytic_account_id=aal.account_id
WHERE aal.user_id=%d and aal.date BETWEEN \'%s\' AND \'%s\'
 Group By aaa.name"
%(user.id, fromDate, toDate)
  self.cr.execute(sql)
  return self.cr.fetchall()

please Help me…………………………..