Need help with writing to and reading from files?

[birdieman]

I made the suggested changes, and get no errors (that I can tell), but the last part of the code does not do what I want it to, which is to read the file I just wrote to, and print out what was read (there should be 80 rows of three variables/values per row).  With the code I have,  I assumed the print statement would execute each time the file was read, ie, read a row, print it, read a row, print it, etc. (nothing prints out)

f = open("test.txt", "w")
yourstartage = 62
herstartage = 61
startyear = 2017
for y in range(81):
   f.write('{}{}{}\n'.format(startyear, yourstartage, herstartage))
   yourstartage += 1
   herstartage += 1
   startyear += 1


with open("test.txt", "r") as opened_file:
   for line in opened_file:
       startyear, yourstartage, herstartage = line.split()
       print(startyear, yourstartage, herstartage)

I looked on the forum site to find how to do code tags but could not find reference. sorry.  thanks for all of your help - no more questions today