i have a large data file . THE DATA WHICH I WOULD TO EXTRACT IN FORMAT

GROUP NUMBER 1

N BIRTH CODE TEST 1 TEST 2 TEST 3 TOTAL ID
1 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
2 29-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
3 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555

TOTAL=

GROUP NUMBER 2

N BIRTH CODE TEST 1 TEST 2 TEST 3 TOTAL ID
1 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
2 29-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
3 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555

TOTAL=

GROUP NUMBER 3

N BIRTH CODE TEST 1 TEST 2 TEST 3 TOTAL ID
1 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
2 29-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555
3 28-4-1986 0000000001 0.000000000 0.000000000 0.000000000 0.000000000 1019892555

TOTAL=

WHERE GROUP NUMBER CHANGE FROM 1 TO 1000

# in real it is up to 10000000 so it is difficult to defined each group number

I WANT TO EXTRACT INTO TEXT FILE The total column for group number
1 51 101 151 201 251 301 351 401 451 501 551 601 651 701 751 801 851 901 951.

i write code:

with open('data.txt') as infile, open('total.txt', 'w') as outfile:     
copy = False     
for line in infile:        
if line.startswith("GROUP NUMBER   1"):             
copy = True        
elif line.startswith("TOTAL"):             
copy = False        
elif line.startswith("GROUP NUMBER  51"):             
copy = True        
elif line.startswith("TOTAL"):             
copy = False        
elif line.startswith("ZONE NUMBER  101"):             
copy = True        
elif line.startswith("TOTAL"):             
copy = False 
#UNTIL REACH 951            
continue             
outfile.write(line)             
continue        
elif copy:             
outfile.write(line) 

my questions

1- can I let the group number change automatic by do?

2- can I extract only the column total not all data in between ?

thanks