Python之dataframe修改異常值—按行判斷值是否大於平均值的指定倍數，如果是則用均值替換

 

 

import pandas as pd

data = {'hah':[1,2,9],
       '數量':[3,2,5],
       '價格':[10,9,8]}
df = pd.DataFrame(data)
df

import numpy as np
def panduan(x):
    x_mean = np.mean(x)
    print(x_mean)
    for i in x.index:
        if x[i] > x_mean*2:
            x[i] = x_mean
#         print(i)     
    return x

df = df.apply(lambda x:panduan(x),axis=1)