import os

import struct

a = 0x1A2B3C4D

b = 0x239875ad3d5ffaaa

filepath = 'D:\\wygDocument\\python\\code\\abc.dat'

f_in = open(filepath,'wb+')

for value in range(1,5):

  f_in.write(struct.pack('>I',a))

  f_in.write(struct.pack('>Q',b))

f_in.close()

print('Write OK')

 1 import os

 2 import struct

 3

 4 #Read file into list

 5 with open('E:/fep/tj19.txt','r') as f:

 6   line = f.read().strip()

 7   linestr = line.split('\n')  #splited by line breaks

 8   #linestr = line.split(r"[\s\n]",line)  #splited by Space character and line breaks

 9

10 f_out = open('E:/fep/realData.dat','xb')

11

12 frame_flag_0 = 0x1A2B3C4D5E6F

13 mask = 0xFFFFFFFFFFFF

14

15 for i in range(0,len(linestr)):

16   filepath = 'E:/fep/19/' + linestr[i]

17   f_in = open(filepath,'rb')

18   f_size = os.path.getsize(filepath)

19   f_in.seek(109)

20

21   offset = 109

22   chunk = 905

23

24   while True:

25     if offset >= f_size:

26       break

27     buff = f_in.read(15)

28     offset += chunk

29

30     unpacked_data = struct.unpack_from('>ih',buff,9)  #start from the 9th byte

31     if(unpacked_data[0] != 439041101) or (unpacked_data[1] != 24175)  #1A2B3C4D     5E6F

32       f_out.write(buff)

33       f_out.write(f_in.read(890))  # 9 + 6 + 890

34

35     f_in.seek(offset)

36

37   f_in.close()

38   f_out.flush()

39

40 f_out.close()

41 print('OK')