python socket服务器进行远程升级

# coding:utf-8
from socket import *
import binascii, linecache, time

ServerUrl = "127.0.0.1:900"

def SocketServer():
    try:
        Colon = ServerUrl.find(':')
        IP = ServerUrl[0:Colon]
        Port = int(ServerUrl[Colon + 1:])

        # 建立socket对象
        print("serval start: %s" % ServerUrl)
        sockobj = socket(AF_INET, SOCK_STREAM)
        sockobj.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
        # 绑定ip端口
        sockobj.bind((IP, Port))
        sockobj.listen(5)

        i = 1
        while i < 5770:#升级5660行
            connection, address = sockobj.accept()
            while 1:
                # 读取某一行
                def getline(the_file_path, line_number):
                    if line_number < 1:
                        return ''
                    for cur_line_number, line in enumerate(open(the_file_path, 'rU')):
                        if cur_line_number == line_number - 1:
                            return line.replace('\n', '\r\n')
                            return line
                    return ''
                the_line = str(linecache.getline('E:\\1.hex', i)).strip()#需要发送的hex文件
                # the_line = str(linecache.getline('E:\\1.hex', i))#需要发送的hex文件
                ss = binascii.a2b_hex(the_line)
                print(ss)
                time.sleep(0.05)
                def re(i):
                    if i <= 4659:#需要升级多少行
                        # 将前面对齐
                        if (len(str(i)) == 1):
                            s = hex(i)
                            sss = ''
                            for s1 in s:
                                if s1 == 'x':
                                    s1 = '000'
                                sss = (sss + s1)
                            return (sss[1:])
                        elif (len(str(i)) == 2):
                            s = hex(i)
                            sss = ''
                            for s1 in s:
                                if s1 == 'x':
                                    s1 = '00'
                                sss = (sss + s1)
                            return(sss[1:])
                        elif (len(str(i)) == 3):
                            s = hex(i)
                            sss = ''
                            for s1 in s:
                                if s1 == 'x':
                                    s1 = '0'
                                sss = (sss + s1)
                            return(sss)
                        elif (len(str(i)) == 4):
                            s = hex(i)
                            sss = ''
                            for s1 in s:
                                if s1 == 'x':
                                    s1 = ''
                                sss = (sss + s1)
                            return(sss)
                    # else:
                    #     s = hex(i)
                    #     sss = ''
                    #     for s1 in s:
                    #         if s1 == 'x':
                    #             s1 = ''
                    #         ss = (sss + s1)
                    #     return(sss[1:])
                sre = re(i)
                if len(re(i))==3:
                    sre = '0'+sre
                elif len(re(i))==5:
                    sre = sre[1:]
                print('第'+i+'行')

                connection.send(binascii.a2b_hex(sre)+binascii.a2b_hex('3a')+ss)
                # connection.send(binascii.a2b_hex('3a'))
                # # connection.send(binascii.a2b_hex('3a'))
                # connection.send(ss)
                i = i+1
            connection.close()
    except Exception as ex:
        print(ex)

SocketServer()