python检测文件夹变化,并拷贝有更新的文件到对应目录的方法

# newcopy.py文件
# -*- coding:UTF-8 -*-
import os
import os.path
import sys
import time
import datetime
import stat
import difflib
import linecache, shutil

# 文件全路径和对应最后修改时间写入到out.txt文档中；
def add_log(path):
 with open('out.txt','w') as f:
  f.close()
 for root , dirs, files in os.walk(path):
  for name in files:
   temp_path = os.path.join(root,name)
   file_name = temp_path.replace('C:/Users/Enter/Desktop/', '')
   file_time = os.stat(temp_path).st_mtime
   with open('out.txt','a') as f:
    f.write( ','.join( ['%s' % file_name , '%s\n' % file_time] ) )
    f.close()

 # 注意时间格式转换
   #file_time = time.localtime(os.stat(root).st_mtime)
   #file_time=date.strftime('%Y-%m-%d %H:%M:%S')

def if_exist():

 # 判断文件out.txt是否存在,不存在则创建
 filename = 'out.txt'
 if os.path.exists(filename):
  message = 'OK, the "%s" file exists.'
 else:
  message = "Sorry, I cannot find the '%s' file..and I create it."
  a = open('out.txt', 'w')
  a.close()
 print message % filename

 # 判断update文件夹是否存在,不存在则创建
 files_name='update'
 if os.path.exists(files_name):
  message = 'OK, the "%s" file exists.'
 else:
  message = "Sorry, I cannot find the '%s' file.and I create it. "
  os.mkdir('update')
 print message % files_name


# path 待比较的文件夹路径
# 返回生成的txt（包含更新或者添加的文件路径）的路径
def log_compare(path):

 # 先确保out.txt存在
 if_exist()

 # 获取out.txt文件内容（文件全路径key和最后修改时间value），生成dict
 txt = open('out.txt', 'r').readlines()
 myDic = {}
 for row in txt:
  (key, value) = row.split(',')
  myDic[key] = value
 print myDic

 # 创建以时间命名的文件和文件夹
 setup_filename = str(datetime.datetime.now().strftime('%Y%m%d%H%M%S'))    # 获取当前时间
 setup_file_path = '%s%s.txt' %('C:/Users/Enter/Desktop/update/' ,setup_filename) # 生成以当前时间命名的.txt文件，准备写入更新日志
 setup_file_dir = '%s%s' %('C:/Users/Enter/Desktop/update/' ,setup_filename)  # 生成以当前时间命名的.txt文件夹

 #判断key，比较value值是否变化
 #原始需要有一个out.txt文件，才能比较value确定是否有更新
 #运行程序时，重新遍历一遍文件全路径和最后修改时间
 for root , dirs, files in os.walk(path):
  for name in files:
   temp_path = os.path.join(root,name)
   file_name = temp_path.replace('C:/Users/Enter/Desktop/', '')
   time = os.stat(temp_path).st_mtime        # 获取最后修改时间
   file_time = '%s\n' % time          # 加%s\n是为了与out.txt里值完全对应
   if myDic.has_key(file_name) == True:
    if cmp(myDic[file_name], file_time):  # myDic[file_name]旧最后修改时间，file_time新最后修改时间
     print (file_name,file_time)    # 输出有变化的文件名及其对应的最后修改时间

     # 输出以文件时间命名的更新日志，生成路径是update下
     with open(setup_file_path,'a') as f: # 有更新的文件，写入更新日志
      f.write( '%s\n' % file_name )
      f.close()
   else:
    print "add",file_name
    with open(setup_file_path,'a') as f:   # 新增的文件，写入更新日志
      f.write( '%s\n' % file_name )
      f.close()

  # 返回 当前时间，以时间命名的文件夹路径，更新文件路径
 return (setup_filename, setup_file_dir, setup_file_path)

# 将src目录中的内容拷贝到dest目录
# 如果dest或者其子目录不存在，先创建
# txt_path为更新日志路径，有更新的文件才拷贝
def copy_directory(src, dest, txt_path):
 if not os.path.exists(txt_path):
  print "no file update"
  return

 # 读更新日志，获取更新文件的全路径

 txt = open(txt_path, 'r').readlines()
 myDic = {}
 myDic2 = {}
 for row in txt:
  myDic[row] = "1"
  tempArray = os.path.split(row)
  key = tempArray[0]
  myDic2[key] = "1"

 print "myDic2:", myDic2
 print "dict:", myDic

 # 遍历原始文件夹，得到所有文件的全路径
 for root, dirs, files in os.walk(src):
  for name in files:
   #print "dirs:",dirs
   fpath = os.path.join(root, name)
   newroot = root
   newroot = newroot.replace(src, dest)  # 根据文件绝对路径，创建将要拷贝的路径（相对路径），没有则创建
   #print newroot
   rel_dir = root.replace('C:/Users/Enter/Desktop/', '')
   if not os.path.exists(newroot) and myDic2.has_key(rel_dir):
    print "rel_dir:" , rel_dir
    print newroot
    os.makedirs(newroot)
    os.chmod(newroot, stat.S_IWRITE)
   temp = fpath
   temp = temp.replace(src, dest)
   rel_path = fpath.replace('C:/Users/Enter/Desktop/', '')  # 将绝对路径改为相对路径，便于遍历对比，挑出要拷贝的文件
   rel_path += '\n'

   if myDic.has_key(rel_path) == True:
    print "real_path:" , rel_path
    # os.mkdir(rel_path)
    shutil.copy(fpath, temp)
    print "copyfile:", fpath


def main():

 path_dir = 'C:/Users/Enter/Desktop/acd'
 path_file = 'C:/Users/Enter/Desktop/out.txt'

 params = log_compare(path_dir)
 add_log(path_dir)
 copy_directory(path_dir, params[1], params[2])


if __name__ == '__main__':
 main()

#pyinotify.py文件
# -*- coding:UTF-8 -*-
import os
import win32file
import win32con
# #检测当前目录下所有文件删除、更新、修改等变化。更新日志输出到桌面。2016.5.23 copy


ACTIONS = {
 1 : "Created",
 2 : "Deleted",
 3 : "Updated",
 4 : "Renamed from something",
 5 : "Renamed to something"
}
# Thanks to Claudio Grondi for the correct set of numbers
FILE_LIST_DIRECTORY = 0x0001
path_to_watch = "."
hDir = win32file.CreateFile (
 path_to_watch,
 FILE_LIST_DIRECTORY,
 win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE,
 None,
 win32con.OPEN_EXISTING,
 win32con.FILE_FLAG_BACKUP_SEMANTICS,
 None
)
while 1:
 #
 # ReadDirectoryChangesW takes a previously-created
 # handle to a directory, a buffer size for results,
 # a flag to indicate whether to watch subtrees and
 # a filter of what changes to notify.
 #
 # NB Tim Juchcinski reports that he needed to up
 # the buffer size to be sure of picking up all
 # events when a large number of files were
 # deleted at once.
 #
 results = win32file.ReadDirectoryChangesW (
 hDir,
 1024,
 True,
  win32con.FILE_NOTIFY_CHANGE_FILE_NAME |
  win32con.FILE_NOTIFY_CHANGE_DIR_NAME |
  win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES |
  win32con.FILE_NOTIFY_CHANGE_SIZE |
  win32con.FILE_NOTIFY_CHANGE_LAST_WRITE |
  win32con.FILE_NOTIFY_CHANGE_SECURITY,
 None,
 None
 )

 #print "results:", results

 for action, file in results:
 full_filename = os.path.join (path_to_watch, file)
 print full_filename, ACTIONS.get (action, "Unknown")
 with open('C:/Users/Enter/Desktop/fileupdate.txt','a') as f:
  #str = ','.join( ['%s' % full_filename , '%s\n' % ACTIONS.get (action, "Unknown")] )
  #print str
  f.write( ','.join( ['%s' % full_filename , '%s\n' % ACTIONS.get (action, "Unknown")] ) )
  f.close()