How Can I Process A File And Update Its Contents?

1.	How Can I Process A File And Update Its Contents?
Answer» One way to do this is: Use read_lines() to READ in the CONTENTS of a file. MANIPULATE the sequence of LINES as DESIRED Use write_lines() to write the sequence back to a file. One way to do this is:

Answer»

One way to do this is:

One way to do this is:

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