一行代码实现csv文件转化为数字二维列表的python实现方法

Python 3.1.3
>>> L=[[float (x) for x in y.split(',')] for y in open('data4.csv').read().rstrip().split('\n')[1:]]
>>> print(L)
>>> 
[[550.0, 50.0], [473.0, 50.0], [428.0, 50.0], [446.0, 36.0], [479.0, 14.0], [418.0, 29.0], [469.0, 24.0], [528.0, 30.0], [465.0, 23.0]]
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