tests

[Jason]

On Aug 9, 8:46 am, "special_dragonfly" <Domi... at PLEASEASK.co.uk>
wrote:
> <dijkstra.ar... at gmail.com> wrote in message
> >http://docs.python.org/lib/module-filecmp.html
>
> My understanding of reading that is that it only looks at the file names
> themselves and not their contents. So whether filename1=filename2 and in the
> case of the function below it, whether one directory has files which are in
> the other.
> Correct me if I'm wrong.
> Dom
>
> P.S. md5 or sha hash is what I'd go for, short of doing:
>
> MyFirstFile=file("file1.xls")
> MySecondFile=file("file2.xls")
> If MyFirstFile==MySecondFile:
>     print "True"
>
> although this won't tell you where they're different, just that they are...

You're incorrect.  If the shallow flag is not given or is true, the
results of os.stat are used to compare the two files, so if they have
the same size, change times, etc, they're considered the same.

If the shallow flag is given and is false, their contents are
compared.  In either case, the results are cached for efficiency's
sake.

  --Jason


The documentation for filecmp.cmp is:
  cmp(  	f1, f2[, shallow])
      Compare the files named f1 and f2, returning True if they seem
equal, False otherwise.

      Unless shallow is given and is false, files with identical
os.stat() signatures are taken to be equal.

      Files that were compared using this function will not be
compared again unless their os.stat() signature changes.

      Note that no external programs are called from this function,
giving it portability and efficiency.