[問題] 關於資料格式的取用[]和()
a = [[1997L,3L],[2001L,4L]]
b = array([[1997L,3L],[2001L,4L]])
這邊想取用讓 c = [1997L,2001L]
在取用b的情況下,我只要b[:,0] = c,
但在取用a的情況下,無法如此得到c,
想請問在不用迴圈的情況下,有辦法得到c嗎?
還有list和np.array的差異?
想釐清這邊觀念下的差異。
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