'''
function for making unique non-existent file name
with saving source file extension
'''
import os
import sys
__author__ = 'Denis Barmenkov <denis.barmenkov@gmail.com>'
__source__ = 'http://code.activestate.com/recipes/577200-make-unique-file-name/'
def add_unique_postfix(fn):
if not os.path.exists(fn):
return fn
path, name = os.path.split(fn)
name, ext = os.path.splitext(name)
make_fn = lambda i: os.path.join(path, '%s(%d)%s' % (name, i, ext))
for i in xrange(2, sys.maxint):
uni_fn = make_fn(i)
if not os.path.exists(uni_fn):
return uni_fn
return None
def demo():
script_path = sys.argv[0]
print 'script file: %s' % script_path
fn_unique = add_unique_postfix(script_path)
print 'with unique postfix: %s' % fn_unique
if __name__ == '__main__':
demo()
Diff to Previous Revision
--- revision 1 2010-04-18 21:07:34
+++ revision 2 2010-04-18 21:07:52
@@ -6,7 +6,7 @@
import sys
__author__ = 'Denis Barmenkov <denis.barmenkov@gmail.com>'
-__source__ = 'http://code.activestate.com/recipes//'
+__source__ = 'http://code.activestate.com/recipes/577200-make-unique-file-name/'
def add_unique_postfix(fn):
if not os.path.exists(fn):
