On Tue, 03 Apr 2012 15:46:31 -0400, D'Arcy Cain wrote:
> On 03/28/12 16:12, John Ladasky wrote:
>> I'm looking for a Python (2.7) equivalent to the Unix "cp" command.
>> Since the equivalents of "rm" and "mkdir" are in the os module, I
>> figured I look there. I haven't found anything in the documentation. I
>> am also looking through the Python source code in os.py and its child,
>> posixfile.py.
>
> cp is not a system command, it's a shell command. Why not just use the
> incredibly simple and portable
>
> >>>open("outfile", "w").write(open("infile").read())
>
> put it into a method if you find that too much to type:
>
> def cp(infile, outfile):
> open(outfile, "w").write(open(infile).read())
Because your cp doesn't copy the FILE, it copies the file's CONTENTS,
which are not the same thing.
Consider:
* permissions
* access times
* file ownership
* other metadata
* alternate streams and/or resource fork, on platforms that support them
* sparse files
By the time you finish supporting the concept of copying the file itself,
rather than merely its content, you will have something similar to the
shutil.copy command -- only less tested.
--
Steven
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