'>>' says "append to an existing file". I believe a single '>' says 'create if necessary, over-write if it already exists'.

When you do the print, do you print OUTPUT_FILE?

If you post your current code, I (or someone else; it's bedtime for me) could better comment.

In reply to Re^7: How to create an output file for each input file by apl
in thread How to create an output file for each input file by Anonymous Monk

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