Python遍历文件夹和读写文件的实现方法

#-*- coding: UTF-8 -*- '''1、读取指定目录下的所有文件2、读取指定文件，输出文件内容3、创建一个文件并保存到指定目录'''import os# 遍历指定目录，显示目录下的所有文件名def eachFile(filepath):  pathDir = os.listdir(filepath)  for allDir in pathDir:    child = os.path.join('%s%s' % (filepath, allDir))    print child.decode('gbk') # .decode('gbk')是解决中文显示乱码问题# 读取文件内容并打印def readFile(filename):  fopen = open(filename, 'r') # r 代表read  for eachLine in fopen:    print "读取到得内容如下：",eachLine  fopen.close()  # 输入多行文字，写入指定文件并保存到指定文件夹def writeFile(filename):  fopen = open(filename, 'w')  print "/r请任意输入多行文字"," ( 输入 .号回车保存)"  while True:    aLine = raw_input()    if aLine != ".":      fopen.write('%s%s' % (aLine, os.linesep))    else:      print "文件已保存!"      break  fopen.close()if __name__ == '__main__':  filePath = "D://FileDemo//Java//myJava.txt"  filePathI = "D://FileDemo//Python//pt.py"  filePathC = "C://"  eachFile(filePathC)  readFile(filePath)  writeFile(filePathI)