Python基础(五) Python文件操作

Python基础(五) Python文件操作

# -*- coding: UTF-8 -*-

import os

print "文件管理"


#打开文件
def OpenFile(filepath,openWay):
   print "****打开文件 "
   print "*******文件名 : ",filepath,"打开方式 :",openWay
   fo = open(filepath,openWay)
   return fo;

#读文件
def ReadFile(fo,lenth):
   print "****读文件"
   str = fo.read(lenth)
   print "*******读取到的内容为:", str 
   return str;

#写文件
def  WriteFile(fo,str):
   print "****写文件"
   fo.write(str);
   return;


#关闭文件
def CloseFile(fo):
   print "****关闭文件"
   fo.close()
   return

#重命名
def RenameFile(file_name,newname):
   print "****重命名文件",file_name,"为 : ",newname
   os.rename(file_name,newname)
   return

#删除文件
def DeleteFile(file_name):
   print "****删除文件 :",file_name
   str = raw_input("是否确定删除文件Y/N:")
   if str == "Y" or str == "y":
      os.remove(file_name)
      print file_name,"文件已被删除"
   else:
      print "该文件未被删除"
   return;

#输入字符串并写入文件
def WriteFileByInput(filename):
   print "****输入字符串并写入文件"
   str = raw_input("请输入字符");
   print "输入的字符串为 :",str
   fo = OpenFile(filename,"a+")
   WriteFile(fo,str)
   CloseFile(fo)
   return;


#测试
myPath = "test.txt"
newPath = "newTxst.txt"
fo = OpenFile(myPath ,"a+")
WriteFile(fo,"I\'m writing string to this file !")
# 把指针再次重新定位到文件开头
position = fo.seek(0, 0);
stringInFile = ReadFile(fo,120)
CloseFile(fo)
WriteFileByInput(myPath)
RenameFile(myPath,newPath)
DeleteFile(newPath)

复制文件

import shutil
def copyfile(filepath,newpath):
	
	if os.path.exists(newpath):
		os.remove(newpath)
		print "delete ",newpath
		
	shutil.copyfile(filepath, newpath)
	print "copy %s to %s successful" % (filepath,newpath)