Home Backend Development Python Tutorial Introduction to the method of copying and deleting files in Python

Introduction to the method of copying and deleting files in Python

Mar 04, 2017 pm 04:29 PM

用python实现了一个小型的工具。其实只是简单地把debug 目录下的配置文件复制到指定目录,把Release下的生成文件复制到同一指定,过滤掉不需要的文件夹(.svn),然后再往这个指定目录添加几个特定的文件。

    这个是我的第一个python小程序。

    下面就来看其代码的实现。

首先插入必要的库:

import os 
import os.path 
import shutil 
import time, datetime
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然后就是一大堆功能函数。第一个就是把某一目录下的所有文件复制到指定目录中:

def copyFiles(sourceDir, targetDir): 
if sourceDir.find(".svn") >0: 
return 
for file in os.listdir(sourceDir): 
sourceFile = os.path.join(sourceDir, file) 
targetFile = os.path.join(targetDir, file) 
if os.path.isfile(sourceFile): 
if not os.path.exists(targetDir): 
os.makedirs(targetDir) 
 if not os.path.exists(targetFile) or(os.path.exists(targetFile) and (os.path.getsize(targetFile) != os.path.getsize(sourceFile))): 
 open(targetFile, "wb").write(open(sourceFile, "rb").read()) 
 if os.path.isdir(sourceFile): 
 First_Directory = False 
 copyFiles(sourceFile, targetFile)
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删除一级目录下的所有文件:

def removeFileInFirstDir(targetDir): 
for file in os.listdir(targetDir): 
targetFile = os.path.join(targetDir, file) 
if os.path.isfile(targetFile): 
os.remove(targetFile)
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复制一级目录下的所有文件到指定目录:

def coverFiles(sourceDir, targetDir): 
for file in os.listdir(sourceDir): 
sourceFile = os.path.join(sourceDir, file) 
targetFile = os.path.join(targetDir, file) 
#cover the files 
if os.path.isfile(sourceFile): 
open(targetFile, "wb").write(open(sourceFile, "rb").read())
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复制指定文件到目录:

def moveFileto(sourceDir, targetDir):
shutil.copy(sourceDir, targetDir)

往指定目录写文本文件:

def writeVersionInfo(targetDir): 
open(targetDir, "wb").write("Revison:")
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返回当前的日期,以便在创建指定目录的时候用:

def getCurTime(): 
nowTime = time.localtime() 
year = str(nowTime.tm_year) 
month = str(nowTime.tm_mon) 
if len(month) <2: 
month =&#39;0&#39;+ month 
day = str(nowTime.tm_yday) 
if len(day) <2: 
day =&#39;0&#39;+ day 
 return (year +&#39;-&#39;+ month +&#39;-&#39;+ day)
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然后就是主函数的实现了:

if __name__ =="__main__": 
print "Start(S) or Quilt(Q) \n" 
flag = True 
while (flag): 
answer = raw_input() 
if&#39;Q&#39;== answer: 
flag = False 
elif &#39;S&#39;== answer : 
formatTime = getCurTime() 
 targetFoldername ="Build "+ formatTime +"-01" 
 Target_File_Path += targetFoldername
 
 copyFiles(Debug_File_Path, Target_File_Path) 
 removeFileInFirstDir(Target_File_Path) 
 coverFiles(Release_File_Path, Target_File_Path) 
 moveFileto(Firebird_File_Path, Target_File_Path) 
 moveFileto(AssistantGui_File_Path, Target_File_Path) 
 writeVersionInfo(Target_File_Path+"\\ReadMe.txt") 
 print "all sucess" 
 else: 
 print "not the correct command"
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感觉是果然简单, 不过简单的原因是因为库函数丰富,语言基本特性的简单真没感觉出来。

我们再来看一个实例

本人一直用foobar2000作为音乐播放器,听歌时候把自己喜欢的歌都会特别添加到一个播放列表。

自己用iphone,同步歌曲的时候需要用到itunes,而itunes却没有我用foobar2000的精选播放列表呢~

本人只好定期把播放列表的mp3文件拷贝到一个目录,我用itunes只需同步这个目录即可
(顺便吐槽下itunes不好使,在后期我都直接用其他同步工具代替之)

播放列表是*.m3u格式的文本,用记事本打开可以看到mp3的绝对路径。

直接贴代码吧,写得比较仓促,各位将就参考下即可:

#coding=gbk  
import sys, shutil, os, string 
mp3List = "F:\\My Documents\\mp3list\\默认精选.m3u" 
destDir = "G:\\POP\\默认精选" 
 
def cpFile(srcPath): 
  fileName = os.path.basename(srcPath) 
  destPath = destDir + os.path.sep + fileName 
  if os.path.exists(srcPath) and not os.path.exists(destPath): 
    print &#39;cp %s %s&#39; % (srcPath,destPath) 
    shutil.copy(srcPath,destPath) 
 
if __name__ == &#39;__main__&#39;: 
  f = file(mp3List, &#39;r&#39;) 
  lists = f.readlines() 
  for i in lists: 
    cpFile(string.strip(i)) 
     
  f.close()
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