如何编写对数据帧中的所有组/变量组合执行配对t测试的函数

import pandas as pd
import numpy as np
from scipy.stats import ttest_rel

def pairwise_t_test(dataframe):
    result = pd.DataFrame(columns=['Group1', 'Group2', 'T-Statistic', 'P-Value'])
    groups = dataframe.groupby('Group')
    
    for group1, data1 in groups:
        for group2, data2 in groups:
            if group1 != group2:
                t_statistic, p_value = ttest_rel(data1['Variable'], data2['Variable'])
                result = result.append({'Group1': group1, 'Group2': group2, 'T-Statistic': t_statistic, 'P-Value': p_value}, ignore_index=True)
    
    return result