问题
I am writing a pyqt application which require to execute admin task. I would prefer to start my script with elevate privilege. I am aware that this question is asked many times in SO or in other forum. But the solution people are suggesting is to have a look at this SO question Request UAC elevation from within a Python script?
However, I am unable to execute the sample code given in the link. I have put this code on top of the main file and tried to execute it.
import os
import sys
import win32com.shell.shell as shell
ASADMIN = \'asadmin\'
if sys.argv[-1] != ASADMIN:
script = os.path.abspath(sys.argv[0])
params = \' \'.join([script] + sys.argv[1:] + [ASADMIN])
shell.ShellExecuteEx(lpVerb=\'runas\', lpFile=sys.executable, lpParameters=params)
sys.exit(0)
print \"I am root now.\"
It actually ask permission to elevate but print line never get executed. Somebody can help me to run the above code successfully. Thanks in advance.
回答1:
Thank you all for your reply. I have got my script working with the module/ script written by Preston Landers way back in 2010. After two days of browsing the internet I could find the script as it was was deeply hidden in pywin32 mailing list. With this script it is easier to check if the user is admin and if not then ask for UAC/ admin right. It does provide output in separate windows to find out what the code is doing. Example on how to use the code also included in the script. For the benefit of all who all are looking for UAC on windows have a look at this code. I hope it helps someone looking for same solution. It can be used something like this from your main script:-
import admin
if not admin.isUserAdmin():
admin.runAsAdmin()
The actual code is:-
#!/usr/bin/env python
# -*- coding: utf-8; mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
# vim: fileencoding=utf-8 tabstop=4 expandtab shiftwidth=4
# (C) COPYRIGHT © Preston Landers 2010
# Released under the same license as Python 2.6.5
import sys, os, traceback, types
def isUserAdmin():
if os.name == 'nt':
import ctypes
# WARNING: requires Windows XP SP2 or higher!
try:
return ctypes.windll.shell32.IsUserAnAdmin()
except:
traceback.print_exc()
print "Admin check failed, assuming not an admin."
return False
elif os.name == 'posix':
# Check for root on Posix
return os.getuid() == 0
else:
raise RuntimeError, "Unsupported operating system for this module: %s" % (os.name,)
def runAsAdmin(cmdLine=None, wait=True):
if os.name != 'nt':
raise RuntimeError, "This function is only implemented on Windows."
import win32api, win32con, win32event, win32process
from win32com.shell.shell import ShellExecuteEx
from win32com.shell import shellcon
python_exe = sys.executable
if cmdLine is None:
cmdLine = [python_exe] + sys.argv
elif type(cmdLine) not in (types.TupleType,types.ListType):
raise ValueError, "cmdLine is not a sequence."
cmd = '"%s"' % (cmdLine[0],)
# XXX TODO: isn't there a function or something we can call to massage command line params?
params = " ".join(['"%s"' % (x,) for x in cmdLine[1:]])
cmdDir = ''
showCmd = win32con.SW_SHOWNORMAL
#showCmd = win32con.SW_HIDE
lpVerb = 'runas' # causes UAC elevation prompt.
# print "Running", cmd, params
# ShellExecute() doesn't seem to allow us to fetch the PID or handle
# of the process, so we can't get anything useful from it. Therefore
# the more complex ShellExecuteEx() must be used.
# procHandle = win32api.ShellExecute(0, lpVerb, cmd, params, cmdDir, showCmd)
procInfo = ShellExecuteEx(nShow=showCmd,
fMask=shellcon.SEE_MASK_NOCLOSEPROCESS,
lpVerb=lpVerb,
lpFile=cmd,
lpParameters=params)
if wait:
procHandle = procInfo['hProcess']
obj = win32event.WaitForSingleObject(procHandle, win32event.INFINITE)
rc = win32process.GetExitCodeProcess(procHandle)
#print "Process handle %s returned code %s" % (procHandle, rc)
else:
rc = None
return rc
def test():
rc = 0
if not isUserAdmin():
print "You're not an admin.", os.getpid(), "params: ", sys.argv
#rc = runAsAdmin(["c:\\Windows\\notepad.exe"])
rc = runAsAdmin()
else:
print "You are an admin!", os.getpid(), "params: ", sys.argv
rc = 0
x = raw_input('Press Enter to exit.')
return rc
if __name__ == "__main__":
sys.exit(test())
回答2:
in comments to the answer you took the code from someone says ShellExecuteEx doesn't post its STDOUT back to the originating shell. so you will not see "I am root now", even though the code is probably working fine.
instead of printing something, try writing to a file:
import os
import sys
import win32com.shell.shell as shell
ASADMIN = 'asadmin'
if sys.argv[-1] != ASADMIN:
script = os.path.abspath(sys.argv[0])
params = ' '.join([script] + sys.argv[1:] + [ASADMIN])
shell.ShellExecuteEx(lpVerb='runas', lpFile=sys.executable, lpParameters=params)
sys.exit(0)
with open("somefilename.txt", "w") as out:
print >> out, "i am root"
and then look in the file.
回答3:
Here is a solution with an stdout redirection:
def elevate():
import ctypes, win32com.shell.shell, win32event, win32process
outpath = r'%s\%s.out' % (os.environ["TEMP"], os.path.basename(__file__))
if ctypes.windll.shell32.IsUserAnAdmin():
if os.path.isfile(outpath):
sys.stderr = sys.stdout = open(outpath, 'w', 0)
return
with open(outpath, 'w+', 0) as outfile:
hProc = win32com.shell.shell.ShellExecuteEx(lpFile=sys.executable, \
lpVerb='runas', lpParameters=' '.join(sys.argv), fMask=64, nShow=0)['hProcess']
while True:
hr = win32event.WaitForSingleObject(hProc, 40)
while True:
line = outfile.readline()
if not line: break
sys.stdout.write(line)
if hr != 0x102: break
os.remove(outpath)
sys.stderr = ''
sys.exit(win32process.GetExitCodeProcess(hProc))
if __name__ == '__main__':
elevate()
main()
回答4:
Here is a solution which needed ctypes module only. Support pyinstaller wrapped program.
#!python
# coding: utf-8
import sys
import ctypes
def run_as_admin(argv=None, debug=False):
shell32 = ctypes.windll.shell32
if argv is None and shell32.IsUserAnAdmin():
return True
if argv is None:
argv = sys.argv
if hasattr(sys, '_MEIPASS'):
# Support pyinstaller wrapped program.
arguments = map(unicode, argv[1:])
else:
arguments = map(unicode, argv)
argument_line = u' '.join(arguments)
executable = unicode(sys.executable)
if debug:
print 'Command line: ', executable, argument_line
ret = shell32.ShellExecuteW(None, u"runas", executable, argument_line, None, 1)
if int(ret) <= 32:
return False
return None
if __name__ == '__main__':
ret = run_as_admin()
if ret is True:
print 'I have admin privilege.'
raw_input('Press ENTER to exit.')
elif ret is None:
print 'I am elevating to admin privilege.'
raw_input('Press ENTER to exit.')
else:
print 'Error(ret=%d): cannot elevate privilege.' % (ret, )
回答5:
I found a very easy solution to this problem.
- Create a shortcut for
python.exe - Change the shortcut target into something like
C:\xxx\...\python.exe your_script.py - Click "advance..." in the property panel of the shortcut, and click the option "run as administrator"
I'm not sure whether the spells of these options are right, since I'm using Chinese version of Windows.
回答6:
I can confirm that the solution by delphifirst works and is the easiest, simplest solution to the problem of running a python script with elevated privileges.
I created a shortcut to the python executable (python.exe) and then modified the shortcut by adding my script's name after the call to python.exe. Next I checked "run as administrator" on the "compatibility tab" of the shortcut. When the shortcut is executed, you get a prompt asking permission to run the script as an administrator.
My particular python application was an installer program. The program allows installing and uninstalling another python app. In my case I created two shortcuts, one named "appname install" and the other named "appname uninstall". The only difference between the two shortcuts is the argument following the python script name. In the installer version the argument is "install". In the uninstall version the argument is "uninstall". Code in the installer script evaluates the argument supplied and calls the appropriate function (install or uninstall) as needed.
I hope my explanation helps others more quickly figure out how to run a python script with elevated privileges.
回答7:
Also if your working directory is different than you can use lpDirectory
procInfo = ShellExecuteEx(nShow=showCmd,
lpVerb=lpVerb,
lpFile=cmd,
lpDirectory= unicode(direc),
lpParameters=params)
Will come handy if changing the path is not a desirable option remove unicode for python 3.X
来源：https://stackoverflow.com/questions/19672352/how-to-run-python-script-with-elevated-privilege-on-windows