import pandas as pdsdata = {'Ohio': 35000, 'Texas': 71000, 'Oregon': 16000, 'Utah': 5000}obj1 = pd.Series(sdata)states = ['California', 'Ohio', 'Oregon', 'Texas']obj2 = pd.Series(sdata, index=states)obj3 = pd.isnull(obj2)下一个陈述怎么可能是真的呢?x = obj2['California']obj2['California'] != x
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