使用python进行传输层的帧的类型判断
以下是按照一定规则,判断传输层的帧的种类的。
打开文件,按照行读取文件,然后进行写文件,注意,写入的是另外一个新创建的文件,不是原文件,这样也避免了对原文件的破坏。
使用字符串的split方法对其进行了处理。
#use the basic file and string operation. import re #str1 = '19:45:40:9854 Rx 1 0x7E0 s 8 02 10 03 00 00 00 00 00\r\n fdfdfdfdf' fd1 = open('BUSMASTERLogFile_0.log', 'r') fd1_new = open('BUSMASTERLogFile_0_new.log', 'w') #str_list1 = fd1.readlines() i = 0 try: while True: text_line = fd1.readline() if text_line: list1 = text_line.split(' s 8 ') if list1[1][0] == '0': print(str(i)+' single frame') text_line = text_line[:-2]+ ' SF' + '\n' #add '\n' is correct. elif list1[1][0] == '1': print(str(i)+' first frame') text_line = text_line[:-2]+ ' FF' + '\n' #add '\n' is correct. elif list1[1][0] == '2': print(str(i)+' consecutive frame') text_line = text_line[:-2]+ ' CF' + '\n' #add '\n' is correct.' elif list1[1][0] == '3': print(str(i)+' FlowControl') text_line = text_line[:-2]+ ' FC' + '\n' #add '\n' is correct. else: print(str(i)+' error!') i= i+1 fd1_new.write(text_line) else: break finally: fd1.close() fd1_new.close()