Create multiple dataframe using for loop in python 2.7

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余生分开走
余生分开走 2021-01-26 01:00

I have a list of locations

[\"HOME\", \"Office\", \"SHOPPING\"]

and a pandas data frame \"DF\"

Start_Location  End_Location            


        
3条回答
  •  有刺的猬
    2021-01-26 01:28

    Use groupby() and then call it's get_group() method:

    import pandas as pd
    import io
    
    text = b"""Start_Location  End_Location    Date
    OFFICE          HOME            3-Apr-15
    OFFICE          HOME            3-Apr-15
    HOME            SHOPPING    3-Apr-15
    HOME            SHOPPING    4-Apr-15
    HOME            SHOPPING    4-Apr-15
    SHOPPING    HOME            5-Apr-15
    SHOPPING    HOME            5-Apr-15
    HOME            SHOPPING    5-Apr-15"""
    
    locations = ["HOME", "OFFICE", "SHOPPING"]
    
    df = pd.read_csv(io.BytesIO(text), delim_whitespace=True)
    g = df.groupby("Start_Location")
    for name, df2 in g:
        globals()["df_" + name.lower()] = df2
    

    but I think add global variables in a for loop isn't a good method, you can convert the groupby to a dict by:

    d = dict(iter(g))
    

    then you can use d["HOME"] to get the data.

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