#多维数组
list = [[87,57,98],[34,87,90]]
print(list[1][0])

l = [[87,57,98],[34,87,[90,99,67]]]
print(l[1][2][1])

#字典 key-value
flightplan = {'flight':'2019-10-26','dep':'重庆','arr':'杭州','flightno':'CA1889'}
print(flightplan['flightno'])
print(flightplan['flight'])
print(flightplan.get('dep'))
print(flightplan.get('arr'))
flightplan['deptime'] = '0900'
flightplan.setdefault('arrtime','1000')
print(flightplan)
#增加
flightplan['flightno'] = 'CA1234'  #中括号方式增加，若该字段已经存在，会修改原有字段的参数值
print(flightplan)
flightplan.setdefault('flightno','CA1998') #中括号方式增加，若该字段已经存在，原有参数值不变
print(flightplan)
#修改
flightplan['dep'] = '成都'
flightplan.update(arr = '曼谷')
print(flightplan)
#删除
flightplan.pop('deptime')
print(flightplan)