本文实例讲述了Python实现查找系统盘中需要找的字符。分享给大家供大家参考。具体如下：

\'\'\'
Created on 2011-7-13
@author: 123
\'\'\'
import os
#保存当前有的磁盘
def existdisk():
 curdisks = []
 allDisks = [\'C:\', \'D:\', \'E:\', \'F:\', \'G:\', \'H:\', \'I:\', \'J:\', \'K:\', \\
    \'L:\', \'M:\', \'N:\', \'O:\', \'P:\', \'Q:\', \'R:\', \'S:\', \'T:\', \\
    \'U:\', \'V:\', \'W:\', \'X:\', \'Y:\', \'Z:\', \'A:\', \'B:\']
 for disk in allDisks:
  if os.path.exists(disk):
   curdisks.append(disk)
 return curdisks
#目录中含有查找的字符
def SearchDirFile(path, src):
 if not os.path.exists(path):
  print \"%s 路径不存在\" % path
 for root , dirs, files in os.walk(path, True):
  if - 1 != root.find(src):
  #路径名中是否存在要查找的字符
   print root 
  for item in files:
    path = os.path.join(root, item)
    if - 1 != path.find(src):
    #文件列表中是否有要查找的字符
    print path
#查找文件内容中有要查找的字符
def SearchFile(path, src): 
 if not os.path.exists(path):
  print \"%s 路径不存在\" % path
 for root, dirs, files in os.walk(path, True):
  for item in files:
   path = os.path.join(root, item)
   try:
    f = open(path, \'r\')
    for eachline in f.readlines():
     if - 1 != eachline.find(src):
     #文本内容中是否有要查找的字符
      print path
      f.close()
      break
   except:
    pass
#查找当前所有磁盘目录下是否有要找的字符
def SearchAllDirFile(src): 
 curdisks = existdisk()
 for disk in curdisks:
  disk = disk + \'\\\\\'
  SearchDirFile(disk, src)
 print \"完成搜索\"
#查找当前所有磁盘目录文件内容下是否有要找的字符
def SearchALLFile(src):   
 curdisks = existdisk()
 for disk in curdisks:
  disk = disk + \"\\\\\"
  SearchFile(disk, src)
 print \"完成搜索\"
SearchALLFile(\'十进制转二进制\')

希望本文所述对大家的Python程序设计有所帮助。