simple renaming files program

MRAB python at mrabarnett.plus.com
Mon Aug 9 16:18:49 CEST 2010


Dave Angel wrote:
> blur959 wrote:
>> On Aug 9, 6:01 pm, Chris Rebert <c... at rebertia.com> wrote:
>>  
>>> <snip>
>>> os.rename() takes paths that are absolute (or possibly relative to the
>>> cwd), not paths that are relative to some arbitrary directory (as
>>> returned by os.listdir()).
>>> Also, never name a variable "file"; it shadows the name of the 
>>> built-in type.
>>>
>>> Hence (untested):
>>> from os import listdir, rename
>>> from os.path import isdir, join
>>> directory =aw_input("input file directory")
>>> s =aw_input("search for name")
>>> r =aw_input("replace name")
>>>
>>> for filename in listdir(directory):
>>>     path = join(directory, filename) #paste the directory name on
>>>     if isdir(path): continue #skip subdirectories (they're not files)
>>>     newname = filename.replace(s, r)
>>>     newpath = join(directory, newname)
>>>     n = rename(path, newpath)
>>>     print n
>>>
>>> Cheers,
>>> Chris
>>> --http://blog.rebertia.com
>>>     
>>
>> Thanks, they worked!
>>
>>   
> A refinement:  use os.path.join(), rather than just join().  It's 
> smarter about adding the right kind of slash between the nodes, if 
> needed.  Currently, if you leave off the trailing slash (from 
> "directory"), you'll end up with the files being one level up, and the 
> individual files having a string prepended.
> 
Have a look at the imports, Dave. :-)



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