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    3. pandas groupby count按小时统计交易量

    pandas groupby count按小时统计交易量

    xiaoxiao2021-03-25  84
    import pandas as pd data=pd.read_csv(r'C:\Users\lenovo\Desktop\TaxiRes_2015-05-08.csv') data['Time'].groupby (data['Time'].map(lambda x: x[11:13])).count()
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