python检测文件夹变化，并拷贝有更新的文件到对应目录

检测文件夹，拷贝有更新的文件到对应目录 2016.5.19
亲测可用，若有借鉴请修改下文件路径；
学习python小一个月后写的这个功能，属于初学，若有大神路过，求代码优化~
newcopy.py：
检测文件夹中最后修改时间变化的文件，并拷贝复制到相应路径下，拷贝目录会自动检测后输出；测试文件夹路径记得修改；
pyinotify.py：
借用window接口，检测脚本所在目录下文件夹变化（更新、删除、添加等），输出日志到桌面上；

# 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()