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[英]Python/Numpy: Combining boolean masks by row in grouped columns in multidimensional array
[英]Python numpy boolean array not whole columns and rows
我想对boolean Numpy 数组的整列/行应用NOT操作。 Numpy 可以吗?
matrix = np.array([[False for i in range(3)] for j in range(2)])
# Initial
# [False, False, False]
# [False, False, False]
matrix[:,1].not() # Something like this
# After not operation on column 1
# [False, True, False]
# [False, True, False]
这应该可以解决问题,请参见此处
matrix[:, 1] = np.logical_not(matrix[:, 1])
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