Rename file without overwriting existing files
__peter__ at web.de
Mon Jan 30 08:58:10 EST 2017
Jussi Piitulainen wrote:
> Peter Otten writes:
>> Steve D'Aprano wrote:
>>> The wider context is that I'm taking from 1 to <arbitrarily huge number>
>>> path names to existing files as arguments, and for each path name I
>>> transfer the file name part (but not the directory part) and then rename
>>> the file. For example:
>>> may be renamed to:
>>> but only provided ham.txt doesn't already exist.
>> Google finds
>> and from a quick test it appears to work on Linux:
> It doesn't seem to be documented.
For functions with a C equivalent a look into the man page is usually
> I looked at help(os.link) on Python
> 3.4 and the corresponding current library documentation on the web. I
> saw no mention of what happens when dst exists already.
> Also, creating a hard link doesn't seem to work between different file
> systems, which may well be relevant to Steve's case.
In his example above he operates inside a single directory. Can one
directory spread across multiple file systems?
> I get:
> OSError: [Errno 18] Invalid cross-device link: [snip]
> And that also is not mentioned in the docs.
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