📅  最后修改于: 2022-03-11 14:45:17.385000             🧑  作者: Mango
>>> import numpy as np
>>> M = np.arange(10)
>>> M
array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
>>> M[(M > 2) & (M < 7)] = -1
>>> M
array([ 0, 1, 2, -1, -1, -1, -1, 7, 8, 9])