python中*args函数的使用

案例1:

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def data_time(df,*cols):
    for col in cols:
        df[col] = df[col].str.replace('年','.')
        df[col] = df[col].str.replace('月','.')
        df[col] = df[col].str.replace('日','')
        df[col] = pd.to_datetime(df[col])
    return(df)
    
data_c2=data_time(data_c1,'数据获取日期')
print(data_c2.head())

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案例2:

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def data_norm(df,*cols):#*args函数的使用还是不太习惯哦
    
    for col in cols:
        colname= col + '_nor'
        df[colname]=(df['_id']-df['_id'].min())/(df['_id'].max()-df['_id'].min())*100
        
    return df  


result1=data_norm(q1data,'_id','知友密度')

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