python txt文件转csv格式

import numpy as np
import pandas as pd
import os  
import csv

path = '/Users/wwl/Downloads/sample'
# 每行每行地处理
def txt2csv_Row():
    for file in os.listdir(path):
        # path内部有一个文件夹，需要跳过这个文件夹
        if(file[-3:] == 'txt'):
            # 拼接目录地址   
            fromFile = path +'/'+ file
            print(fromFile)
            toFile = path + '/csvFile/' + file[:-3]+ 'csv'

            # 按行转换
            csvfile = open(toFile, 'w+')
            lines = open(fromFile, 'r', encoding='utf-8').readlines()
            for line in lines:
                csvfile.write(line)
            csvfile.close()




# 借助Numpy来处理，遇到文件中有空值会报错。
def txt2csv_Numpy():
    countSucc = 0
    countFailed = 0
    for file in os.listdir(path):
        filepath = path +'/'+file
        try :
            data_txt = np.loadtxt(filepath.strip())
            data_txtDF = pd.DataFrame(data_txt)
            data_txtDF.to_csv(path + '/csvFile/' + file[:-3]+ 'csv',index=False)
            countSucc = countSucc + 1
        except Exception:
            print(filepath)
            countFailed = countFailed + 1
        continue
    print("succ" + str(countSucc))
    print("failed" + str(countFailed))
# text()