Ошибка Windows: [Ошибка 183] Невозможно создать файл, если этот файл уже существует. ⇐ Python

[Anonymous]

Я использую следующий сценарий, чтобы добавить право копирования ко всем файлам в каталогах и подкаталогах для заданного каталога, переданного в качестве первого аргумента. Я запускаю сценарий следующим образом, но сталкиваюсь с ошибкой ниже...
Может ли кто-нибудь предоставить информацию о том, как это исправить?

ОШИБКА: -

C:\Dropbox\copyrights>python Add_copyright.py .
Traceback (most recent call last):
File "Add_copyright.py", line 69, in
prepend_file(fullname, dirpath)
File "Add_copyright.py", line 60, in prepend_file
os.rename(temp_fname, fullname)
WindowsError: [Error 183] Cannot create a file when that file already exists


КОД:-

import fnmatch
import os
import shutil
import sys
import tempfile

file_patterns_to_match = ['*.c','*.h','*.cpp','*.txt']

headertext = """/*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
"""

# make any newlines in headertext match the system line ending
headertext = headertext.replace('\n', os.linesep)

def want_this_file(fname):
for pat in file_patterns_to_match:
if fnmatch.fnmatch(fname, pat):
return True
return False

def prepend_file(fullname, path):
# with statement means temp file is written and closed at end of with
with tempfile.NamedTemporaryFile(dir=path, delete=False) as out_file:
# get the name immediately
temp_fname = out_file.name

try:
# use binary mode to avoid newline translations
with open(fullname, "rb") as in_file:
out_file.write(headertext)
shutil.copyfileobj(in_file, out_file)
except Exception:
# on any error, clean up temp file and re-raise exception
try:
os.remove(temp_fname)
except Exception:
print("unable to clean up temp file: " + temp_fname)
pass
raise
# rename temp file to fullname, clobbering original
os.rename(temp_fname, fullname)

start_directory = sys.argv[1]

for dirpath, dirnames, filenames in os.walk(start_directory):
for fname in filenames:
if want_this_file(fname):
fullname = os.path.join(dirpath, fname)
prepend_file(fullname, dirpath)


Подробнее здесь: https://stackoverflow.com/questions/194 ... ady-exists