文件同步程序，Python和C写的DLL

 #coding:utf-8

 from ctypes import *
 from FileCopy import *

 def GetFilePathList(FilePath):
     dll = CDLL(r"F:\VSProject\FileFunction20190101Dll\Release\FileFunction20190101Dll.dll")
     Length = c_int(0)
     return dll.TraversFileInterface(FilePath)

 des = 'E:\Pictures'
 src = 'J:\Video&Pictures'

 #源路径文件列表获取
 psrcchar = GetFilePathList(src)
 szSrcBuffer = c_char_p(psrcchar)
 SrcFilePath = szSrcBuffer.value
 SrcFilePathList = SrcFilePath.split('\r\n')

 #目标文件列表获取
 pdeschar = GetFilePathList(des)
 szDesBuffer = c_char_p(pdeschar)
 DesFilePath = szDesBuffer.value
 DesFilePathList = DesFilePath.split('\r\n')

 #生成目标路径比对集合
 DesFileSet = set()
 for FilePath in DesFilePathList:
     #print FilePath.split('\\')[-1]
     DesFileSet.add(FilePath.split('\\')[-1])

 NewSrcFileList = []
 #根据目标路径内容剔除已存在文件
 for FilePath in SrcFilePathList:
     #print FilePath.split('\\')[-1]
     if FilePath.split('\\')[-1] not in DesFileSet:
         NewSrcFileList.append(FilePath)

 #根据目的地址路径对源文件列表进行改造替换，生成拷贝目的地址
 DesCopyList = []
 for FilePath in NewSrcFileList:
     CopyPath = FilePath.replace(src, des)
     CopyPath = CopyPath[0:CopyPath.rfind('\\')+1]
     CopyFromSrcToDes (FilePath, CopyPath)
     #DesCopyList.append(CopyPath)

 print len(NewSrcFileList)
 print len(DesCopyList)
 #dll.PrintHex(filedata, len(filedata))

FileCopy文件

 import os

 def CopyFileByList():
     return

 def CopyFromSrcToDes(src, des):
     cmdname = 'xcopy ' + '\"' + src + '\"' + ' \"' + des + '\"'
     RunCmd(cmdname)
     return

 def RunCmd(cmd):
     print cmd
     ret = os.system(cmd)
     return