import sys
from subprocess import check_call
if sys.hexversion > 0x03000000:
import winreg
else:
import _winreg as winreg
class Win32Environment:
"""Utility class to get/set windows environment variable"""
def __init__(self, scope):
assert scope in ('user', 'system')
self.scope = scope
if scope == 'user':
self.root = winreg.HKEY_CURRENT_USER
self.subkey = 'Environment'
else:
self.root = winreg.HKEY_LOCAL_MACHINE
self.subkey = r'SYSTEM\CurrentControlSet\Control\Session Manager\Environment'
def getenv(self, name):
key = winreg.OpenKey(self.root, self.subkey, 0, winreg.KEY_READ)
try:
value, _ = winreg.QueryValueEx(key, name)
except WindowsError:
value = ''
return value
def setenv(self, name, value):
# Note: for 'system' scope, you must run this as Administrator
key = winreg.OpenKey(self.root, self.subkey, 0, winreg.KEY_ALL_ACCESS)
winreg.SetValueEx(key, name, 0, winreg.REG_EXPAND_SZ, value)
winreg.CloseKey(key)
# For some strange reason, calling SendMessage from the current process
# doesn't propagate environment changes at all.
# TODO: handle CalledProcessError (for assert)
check_call('''\
"%s" -c "import win32api, win32con; assert win32api.SendMessage(win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment')"''' % sys.executable)
Diff to Previous Revision
--- revision 6 2011-03-31 18:27:06
+++ revision 7 2011-03-31 18:27:57
@@ -1,4 +1,5 @@
import sys
+from subprocess import check_call
if sys.hexversion > 0x03000000:
import winreg
else:
