#-*-encoding:utf-8-*- import osimport sysimport threading def getFileSize(file): file.seek(0, os.SEEK_END) fileLength = file.tell() file.seek(0, 0) return fileLength def divideFile(): fileFullPath = r"%s" % raw_input("File path: ").strip("/"") divideTotalPartsCount = int(raw_input("How many parts do you like to divide?: ")) if os.path.exists(fileFullPath): file = open(fileFullPath, 'rb') fileSize = getFileSize(file) file.close() # send file content for i in range(divideTotalPartsCount): filePartSender = threading.Thread(target=seperateFilePart, args=(fileFullPath, divideTotalPartsCount, i+1, fileSize)) filePartSender.start() for i in range(divideTotalPartsCount): sem.acquire() os.remove(fileFullPath) else: print "File doesn't exist" def seperateFilePart(fileFullPath, divideTotalPartsCount, threadIndex, fileSize): try: # calculate start position and end position filePartSize = fileSize / divideTotalPartsCount startPosition = filePartSize * (threadIndex - 1) #print "Thread : %d, startPosition: %d" % (threadIndex, startPosition) endPosition = filePartSize * threadIndex - 1 if threadIndex == divideTotalPartsCount: endPosition = fileSize - 1 filePartSize = fileSize - startPosition file = open(fileFullPath, "rb") file.seek(startPosition) filePartName = fileFullPath + ".part" + str(threadIndex) filePart = open(filePartName, "wb") lengthWritten = 0 while lengthWritten < filePartSize: bufLen = 1024 lengthLeft = filePartSize - lengthWritten if lengthLeft < 1024: bufLen = lengthLeft buf = file.read(bufLen) filePart.write(buf) lengthWritten += len(buf) filePart.close() file.close() sem.release() print "Part %d finished, size %d" % (threadIndex, filePartSize) except Exception, e: print e sem = threading.Semaphore(0)while True: divideFile() #-*-encoding:utf-8-*-import osdef getFileSize(file): file.seek(0, os.SEEK_END) fileLength = file.tell() file.seek(0, 0) return fileLength def rebuildFile(): fileFullPath = r"%s" % raw_input("File base path: ").strip("/"") divideTotalPartsCount = int(raw_input("How many parts have you divided?: ")) file = open(fileFullPath, "wb") for i in range(divideTotalPartsCount): filePartName = fileFullPath + ".part" + str(i+1) filePart = open(filePartName, "rb") filePartSize = getFileSize(filePart) lengthWritten = 0 while lengthWritten < filePartSize: bufLen = 1024 buf = filePart.read(bufLen) file.write(buf) lengthWritten += len(buf) filePart.close() os.remove(filePartName) file.close() while True: rebuildFile() 
