In <0059c2b1$0$26930$c3e8...@news.astraweb.com> Steven D'Aprano
<st...@remove-this-cybersource.com.au> writes:
>But if you absolutely have to write to the program file...
No, don't have to, beyond the urge to satisfy a very idiosyncratic
aesthetic imperative...
>then append your
>data to the end of the file (as a comment) and later read that, rather
>than modifying the actual code in place. That is, you fetch the
>LAST_VERSION by reading the last non-empty line in the file, something
>like this:
># Untested
>def get_last_version(filename):
> """Retrieves the last version number from the given filename,
> taken from the last non-empty line."""
> candidate = ''
> for line in open(filename, 'r'):
> line = line.strip()
> if line and line.startswith('#'):
> candidate = line.lstrip('# \t')
> # error checking goes here
> return candidate
>LAST_VERSION = get_last_version(sys.argv[0])
>...
>more code goes here
>...
># ==================================================
># === Version number history goes here. ===
># === DO NOT insert any code after this point!!! ===
># ==================================================
># 1.0.1
># 1.0.2a
># 1.0.2
># 1.0.5
>This has the added advantage that you can track the updates made to the
>version number.
Thanks, these are great ideas. Just the feedback I was looking for.
G.
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