您可以从scipy使用detrend。下面是一个例子：

import pandas as pd
import numpy as np
from scipy.signal import detrend

data1 = np.random.rand(100)
data2 = np.random.rand(100)

df1 = pd.DataFrame(data1, columns=['Data1'])
df2 = pd.DataFrame(data2, columns=['Data2'])

def custom_function(window_data):
    return np.mean(window_data)

window_size = 10
stride = 5

df1_detrended = pd.DataFrame(detrend(df1['Data1']), columns=['Data1'])
df2_detrended = pd.DataFrame(detrend(df2['Data2']), columns=['Data2'])