大熊猫以新的列名指定为字符串

您可以将关键字参数传递

assign

kwargs = {"ln(A)" : lambda x: np.log(x.A)}df.assign(**kwargs)    A         B     ln(A)0   1  0.500033  0.0000001   2 -0.392229  0.6931472   3  0.385512  1.0986123   4 -0.029816  1.3862944   5 -2.386748  1.6094385   6 -1.828487  1.7917596   7  0.096117  1.9459107   8 -2.867469  2.0794428   9 -0.731787  2.1972259  10 -0.686110  2.302585