pytorch 实现删除tensor中的指定行列

a = torch.rand(4, 2)
print(a)

idx = 1
a = a[torch.arange(a.size(0))!=1] 
print(a)

"""
tensor([[2.7775e-01, 3.7430e-01],
    [9.0373e-01, 8.1220e-02],
    [9.8638e-01, 8.6293e-01],
    [9.8139e-04, 9.8460e-02]])
    
tensor([[2.7775e-01, 3.7430e-01],
    [9.8638e-01, 8.6293e-01],
    [9.8139e-04, 9.8460e-02]])
"""