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metro_areas = [
('Tokyo', 'JP', 36.933, (35.689722, 139.691667)),
('Delhi NCR', 'IN', 21.935, (28.613889, 77.208889)),
('Mexico City', 'MX', 20.142, (19.433333, -99.133333)),
('New York-Newark', 'US', 20.104, (40.808611, -74.020386)),
('São Paulo', 'BR', 19.649, (-23.547778, -46.635833)),
]
def main():
print(f'{"":15} | {"latitude":>9} | {"longitude":>9}')
for name,_,_,(lat,lon) in metro_areas:
if lon <=0:
print(f'{name:15} | {lat:9.4f} | {lon:9.4f}')
if __name__ == '__main__':
main()
{ } 内是变量名
: 后可写该变量的长度
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