Python3中map函数 在Python2中map函数会返回一个list列表,如代码: [python] view plain copy >>> def f(x, y): return (x, y) >>> l1 = [ 0, 1, 2, 3, 4, 5, 6 ] >>> l2 = [ 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat' ] 返回结果如下: [python] view plain copy >>> map(f, l1, l2) [(0, 'Sun'), (1, 'Mon'), (2, 'Tue'), (3, 'Wed'), (4, 'Thu'), (5, 'Fri'), (6, 'Sat')] 但是,在Python3中返回结果如下: [python] view plain copy >>> map(f1, l1, l2) <map object at 0x00000000021DA860> 如果想要得到Python2的那种结果,即返回list列表,那么必须用list作用于map,如下: [python] view plain copy >>> list(map(f1, l1, l2)) [(0, 'Sun'), (1, 'Mon'), (2, 'Tue'), (3, 'Wed'), (4, 'Thu'), (5, 'Fri'), (6, 'Sat')]