— Don't you think we should ask Daniel what happened when we were away? — Maybe, but _____ he has been so rude to us, I feel like _____ him or he won't respect us. [ ]
A.
even though; to punish
B.
even if; punishing
C.
now that; punishing
D.
so that; punishing
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参考答案:
举一反三
【简答题】补全如下代码,打印其中非NaN变量的数量。 import pandas as pd import numpy as np a = pd.DataFrame(np.arange(20).reshape(4,5)) b = pd.DataFrame(np.arange(16).reshape(4,4)) print((a+b).______())