如何从多个目录下的.txt文件生成一个数据帧？

import os
import pandas as pd

def read_txt_files(directory):
    data_frames = []  # 存储每个文件的数据帧
    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.endswith(".txt"):
                file_path = os.path.join(root, file)
                df = pd.read_csv(file_path, delimiter="\t")  # 根据实际情况选择适当的分隔符
                data_frames.append(df)
    merged_df = pd.concat(data_frames, ignore_index=True)  # 合并所有数据帧
    return merged_df

directory = "/path/to/directory"  # 替换为实际的目录路径
data_frame = read_txt_files(directory)