PermissionError : [WinError 5] Access is denied - python-3.x

Question

I'm beginner in Python. I'm using multi-processing to batch program such as xcopy from host PC to remote PCs. I got a permissionerror such as *DUPLICATE_SAME_ACCESS*. any help would be very helpful.
IDE Env. :
Kepler
Python-3.x
error message
Traceback (most recent call last):
File "C:\Users\Administrator\.eclipse\org.eclipse.platform_4.3.0_1709980481_win32_win32_x86_64\plugins\org.python.pydev_2.8.2.2013090511\pysrc\pydevd.py", line 1446, in <module>
debugger.run(setup['file'], None, None)
File "C:\Users\Administrator\.eclipse\org.eclipse.platform_4.3.0_1709980481_win32_win32_x86_64\plugins\org.python.pydev_2.8.2.2013090511\pysrc\pydevd.py", line 1092, in run
pydev_imports.execfile(file, globals, locals) #execute the script
File "C:\Users\Administrator\.eclipse\org.eclipse.platform_4.3.0_1709980481_win32_win32_x86_64\plugins\org.python.pydev_2.8.2.2013090511\pysrc\_pydev_execfile.py", line 38, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc) #execute the script
File "C:\Users\Administrator\Documents\Kepler\workspace\kr.caleb.python.first\src\fileCopy\xCopyPython.py", line 92, in <module>
dist_files(server_list, 'C:\\Users\\Public\\jvision')
File "C:\Users\Administrator\Documents\Kepler\workspace\kr.caleb.python.first\src\fileCopy\xCopyPython.py", line 79, in dist_files
Process(target=multi_distribute_file,args=(lock, server, dirpath, filename, path)).start()
File "C:\Python33\lib\multiprocessing\process.py", line 111, in start
self._popen = Popen(self)
File "C:\Python33\lib\multiprocessing\forking.py", line 248, in __init__
dump(process_obj, to_child, HIGHEST_PROTOCOL)
File "C:\Python33\lib\multiprocessing\forking.py", line 166, in dump
ForkingPickler(file, protocol).dump(obj)
File "C:\Python33\lib\multiprocessing\synchronize.py", line 70, in __getstate__
return (Popen.duplicate_for_child(sl.handle), sl.kind, sl.maxvalue)
File "C:\Python33\lib\multiprocessing\forking.py", line 258, in duplicate_for_child
return duplicate(handle, Popen._tls.process_handle)
File "C:\Python33\lib\multiprocessing\forking.py", line 201, in duplicate
0, inheritable, _winapi.DUPLICATE_SAME_ACCESS
PermissionError: [WinError 5] Access is denied
Full code (xCopyPython.py) :
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# based on Carnival http://ask.python.kr/users/6970/carnival/
import os, sys, csv, re
from multiprocessing import Process, Lock
class Server:
def __init__(self, addr, path):
self.addr = addr
self.path = path
def multi_distribute_file(lo, server, dirpath, filename, subdir):
lo.acquire()
pathname = os.path.join(dirpath, filename)
print("Read from {}".format(pathname))
with open(pathname, 'rb') as inFile:
buffer = inFile.read()
l = re.findall(r"[\w']+",subdir)
m = re.findall(r"[\w']+",dirpath)
cnt_l = len(l)
cnt_m = len(m)
remotepath = "//%s/%s" % (server.addr, server.path)
if(cnt_m > cnt_l):
for j in range(cnt_m - cnt_l):
remotepath += "/%s" % (m[cnt_l + j])
remotepath += "/%s" % (filename)
print ("Write to {}".format(remotepath))
with open(remotepath, 'wb') as outFile:
outFile.write(buffer)
lo.release()
def make_dir(server_list, subdir, dirpath):
for server in server_list:
l = re.findall(r"[\w']+",subdir)
m = re.findall(r"[\w']+",dirpath)
cnt_l = len(l)
cnt_m = len(m)
path = "//%s/%s" % (server.addr, server.path)
if(cnt_m > cnt_l):
for j in range(cnt_m - cnt_l):
path += "/%s" % (m[cnt_l + j])
d = os.path.dirname(path)
if not os.path.exists(d):
os.makedirs(d)
print ("Make dir {}".format(d))
else:
print ("dir {} already exists.".format(d))
if not os.path.exists(path):
os.makedirs(path)
print ("Make dir {}".format(path))
else:
print ("dir {} already exists.".format(path))
def dist_files(server_list, subdir):
for dirpath, dirnames, filenames in os.walk(subdir):
make_dir(server_list, subdir, dirpath)
for filename in filenames:
for server in server_list:
lock = Lock()
Process(target=multi_distribute_file,args=(lock, server, dirpath, filename, subdir)).start()
def get_server_list(filename):
mydictionary = []
csvFile = csv.reader(open(filename, "r"))
for row in csvFile:
mydictionary.append(Server(row[0], row[1]))
print("{}, {}".format(row[0], row[1]))
return mydictionary
if __name__ == '__main__':
server_list = get_server_list('client_list.csv')
dist_files(server_list, 'C:\\Users\\Public\\Test')
client.csv :
192.168.10.100, Test
192.168.10.101, Test
192.168.10.102, Test

Answer 1

I'm going to modify multi_distribute_file method to open/read file.
origin :
def multi_distribute_file(lo, server, dirpath, filename, subdir):
lo.acquire()
pathname = os.path.join(dirpath, filename)
print("Read from {}".format(pathname))
with open(pathname, 'rb') as inFile:
buffer = inFile.read()
l = re.findall(r"[\w']+",subdir)
m = re.findall(r"[\w']+",dirpath)
cnt_l = len(l)
cnt_m = len(m)
remotepath = "//%s/%s" % (server.addr, server.path)
if(cnt_m > cnt_l):
for j in range(cnt_m - cnt_l):
remotepath += "/%s" % (m[cnt_l + j])
remotepath += "/%s" % (filename)
print ("Write to {}".format(remotepath))
with open(remotepath, 'wb') as outFile:
outFile.write(buffer)
lo.release()
modify : buffer arg is added.
def multi_distribute_file(server, dirpath, filename, subdir, buffer):
#lo.acquire()
#pathname = os.path.join(dirpath, filename)
#print("Read from {}".format(pathname))
#with open(pathname, 'rb') as inFile:
# buffer = inFile.read()
l = re.findall(r"[\w']+",subdir)
m = re.findall(r"[\w']+",dirpath)
cnt_l = len(l)
cnt_m = len(m)
remotepath = "//%s/%s" % (server.addr, server.path)
if(cnt_m > cnt_l):
for j in range(cnt_m - cnt_l):
remotepath += "/%s" % (m[cnt_l + j])
remotepath += "/%s" % (filename)
print ("Write to {}".format(remotepath))
with open(remotepath, 'wb') as outFile:
outFile.write(buffer)
#lo.release()