Cannot redirect print to a file

[tester_V]

Hi,
I hope I'm not overstaying my welcome here.
I'm trying to redirect a print statement to a file with no luck.
I have no errors, just nothing is printed to my file.
code:

from itertools import islice

myfile  = 'C:///LogFile.txt'
outfile = open('C://OUTPUT.txt','w')

index = 0
with open(myfile, "r") as f:
    for line in f:
        index += 1
        if "FIND" in line:
            f.seek(0)
            print("".join(islice(f, index - 5, index + 4)))
            outfile.write(''.join(islice(f, index - 5, index + 4)))
             
outfile.close()