Mainlist=['list1','list2','list3'] ad={ 'list1':[['bsby6m'], ['bloomberg 6month short term ba'], ['1.762740'], ['usd'], ['05/02/2022']], 'list2':[['bsby3m'], ['bloomberg 3month short term ba'], ['1.176640'], ['usd'], ['05/02/2022']], 'list3':[['bsby1m'], ['bloomberg 1month short term ba'], ['.682180'], ['usd'], ['05/02/2022']] }