python detects folder changes and copies updated files to the corresponding directory

Check the folder and copy the updated files to the corresponding directory

Pro test is available. If there is any reference, please modify the file path;

Learning python 1 month after writing this function, belongs to beginners, if there is a god passing by, code optimization ~

newcopy. py:

Detect the last modified file in the folder, copy and copy it to the corresponding path, and the copy directory will be automatically detected and output; Test folder path remember to modify;

pyinotify. py:

Using the window interface, detect folder changes (update, delete, add, etc.) in the directory where the script is located, and output the log to the desktop;

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

#  The file full path and corresponding last modified time is written to out.txt In the document; 
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()

 #  Note the time format conversion 
   #file_time = time.localtime(os.stat(root).st_mtime)
   #file_time=date.strftime('%Y-%m-%d %H:%M:%S')

def if_exist():

 #  Judge documents out.txt If there is a , Create if it doesn't exist 
 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

 #  judge update Whether the folder exists , Create if it doesn't exist 
 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  The folder path to compare 
#  Return the generated txt The path that contains the updated or added file path 
def log_compare(path):

 #  To ensure that out.txt There are 
 if_exist()

 #  To obtain out.txt File contents (file full path key And the last modification time value Generated), dict
 txt = open('out.txt', 'r').readlines()
 myDic = {}
 for row in txt:
  (key, value) = row.split(',')
  myDic[key] = value
 print myDic

 #  Create files and folders named after the time 
 setup_filename = str(datetime.datetime.now().strftime('%Y%m%d%H%M%S'))    #  Get current time 
 setup_file_path = '%s%s.txt' %('C:/Users/Enter/Desktop/update/' ,setup_filename) #  Generates one named after the current time .txt File, ready to write to the update log 
 setup_file_dir = '%s%s' %('C:/Users/Enter/Desktop/update/' ,setup_filename)  #  Generates one named after the current time .txt folder 

 # judge key And compare the value Does the value change 
 # Original need has 1 a out.txt Documents can be compared value Determine if there are updates 
 # When you run the program, re-iterate 1 Full path through the file and last modification time 
 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        #  Gets the last modification time 
   file_time = '%s\n' % time          #  add %s\n Is in order to out.txt The inside values are exactly the same 
   if myDic.has_key(file_name) == True:
    if cmp(myDic[file_name], file_time):  # myDic[file_name] The old last revision date, file_time New last modified time 
     print (file_name,file_time)    #  Outputs the file name with the change and the corresponding last modification time 

     #  Output the update log named after the file time. The build path is update Under the 
     with open(setup_file_path,'a') as f: #  An updated file is written to the update log 
      f.write( '%s\n' % file_name )
      f.close()
   else:
    print "add",file_name
    with open(setup_file_path,'a') as f:   #  A new file is added to the update log 
      f.write( '%s\n' % file_name )
      f.close()

  #  return   Current time, folder path named by time, update file path 
 return (setup_filename, setup_file_dir, setup_file_path)

#  will src Copy the contents of the directory to dest directory 
#  if dest If the subdirectory does not exist, create it first 
# txt_path To update the log path, the updated file is copied 
def copy_directory(src, dest, txt_path):
 if not os.path.exists(txt_path):
  print "no file update"
  return

 #  Read the update log to get the full path to the update file 

 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

 #  Traverse the original folder to get the full path to all files 
 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)  #  According to the absolute path of the file, create the path to be copied (relative path), create no 
   #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/', '')  #  Change the absolute path to the relative path to make it easier to walk through the comparison and pick out the files to copy 
   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 file 
# -*- coding:UTF-8 -*-
import os
import win32file
import win32con
# # Detect all file deletion, update, modification and other changes in the current directory. Update log output to desktop. 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()