摘要:
import pandas as pd df = pd.DataFrame([[2001, 'D', 2], [2004, 'T', 3], [2003, 'T', 5], [2001, 'T', 4], [2004, 'D', 7]], columns=['year', 'type', 'cnt'
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摘要:
print(df_year_month) print(' ') print(df_year_month.index) print(df_year_month.index.tolist()) print(' ') print(df_year_month.index.levels[0]) print(d
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