Refer the given code and let us know in case you have any concerns.
with open('first_file.txt', 'r') as file1:
with open('second_file.txt, 'r') as file2:
difference = set(file1).difference(file2)
difference.discard('\n')
with open('diff.txt', 'w') as file_out:
for line in difference:
file_out.write(line)
Hope this helps!!
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