元组学习

Posted 2020-12-16 liuguangshou123

将元组作为一个记录存入列表中:

traveler_ids=[(‘USA‘,‘311‘),(‘BRA‘,‘342‘),(‘ESP‘,‘566‘)]
for passport in sorted(traveler_ids):
    print("%s%s"%passport)

元组拆包:

city,year,pop,chg,area=(‘Tokyo‘,2003,32450,0.66,8014)

一行话实现多个变量的赋值。

嵌套元组拆包：

metro_areas=[
(‘Tokyo‘,‘JP‘,(35.6,120.9)),
(‘New York‘,‘US‘,(40.8,-75)),
]

fmt=‘{:15} | {:9f} | {:9f}‘

for name,cc,(lat,lon) in metro_areas:
    print(fmt.format(name,lat,lon))