Python列出了真正的虚假陈述

Question

我对python列表有疑问，如何通过在列表上设置缓冲区来向后迭代？我的意思是如果路径不正确，请将其保留在内存中，然后再次迭代？ 我的代码示例：

def clientthread(conn): 
    #Infinite loop so that function do not terminate and thread do not end.
    # Array of input data, check for complete transaction from PID


    while True:
        # Recive true data 
        data = conn.recv(4069)  
        newpid = os.fork()
        if newpid == 0:
            child()
        else:
            bufsize = 0
            input_data = []
            input_miss = []
            if data:
                # Check data
                pids = (os.getpid(), newpid)
                print "Parent: %d, Child: %d" % pids
                # Split line
                word = data.split(';')     
                if word[0] == "START":
                    channel     = word[2]
                    fileName    = word[6].rstrip()
                    yearMonth   = word[3]
                    channelID   = word[1]
                    videoStart  = word[5]
                    day         = word[4] 
                    file_name   = path_images+channel+'/'+yearMonth+'/'+day+'/'+fileName+'/'+fileName+'.txt'
                    create_file = open(file_name,'w+', bufsize)

                elif word[0] == "END":
                    # End loop if come END   
                    break

                else:
                    if pids:
                        slika = path_images+channel+'/'+yearMonth+'/'+day+'/'+fileName+'/'+fileName+'_'+word[0]+".jpg"
                        input_data.append(slika)

                # Loop for reading images from buffer, and try to make hash on each, if fails stay opened till END come, on succed remove from array
                for image in input_data:
                    if os.path.exists(image):
                        #print image
                        hash1 = pHash.imagehash(image)
                        #print hash1
                        print >> create_file ,fileName+","+channelID+","+yearMonth+","+word[0]+","+str(hash1)+","+word[1].rstrip()+","+videoStart                  
                        input_data.remove(image) 

                        if not os.path.exists(image):
                            input_miss.append(image)  
                            print image


                    else:
                        for miss in input_miss:
                            if os.path.exists(miss):
                                hash_miss = pHash.imagehash(miss)
                                print hash_miss + 'check on'
                                print >> create_file ,fileName+","+channelID+","+yearMonth+","+word[0]+","+str(hash_miss)+","+word[1].rstrip()+","+videoStart                  
                                input_miss.remove(miss)



            else:

                time.sleep(60) 

    #came out of loop
    conn.close()

我期待价值，并检查每张图片的路径。我的问题是，如果不是真的话，如何在数组中保存变量，并在图像出现时再次开始处理。