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bpo-30374: Fixed several bugs in win_add2path.py by XDcsy · Pull Request #1645 · python/cpython · GitHub

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bpo-30374: Fixed several bugs in win_add2path.py #1645

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bpo-30374: Fixed several bugs in win_add2path.py #1645

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ddaf7aa
fix several bugs
XDcsy May 18, 2017
0cdb0e8
Tie up some loose ends
XDcsy Feb 4, 2019
80e8874
Tie up some loose ends
XDcsy Feb 4, 2019
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57 changes: 40 additions & 17 deletions Tools/scripts/win_add2path.py
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Expand Up @@ -7,47 +7,70 @@
Licensed to PSF under a Contributor Agreement.
"""

import sys
import site
import ctypes
import os
import site
import sys
import winreg

HKCU = winreg.HKEY_CURRENT_USER
ENV = "Environment"
PATH = "PATH"
DEFAULT = "%PATH%"

def modify():
pythonpath = os.path.dirname(os.path.normpath(sys.executable))
scripts = os.path.join(pythonpath, "Scripts")
appdata = os.environ["APPDATA"]
if hasattr(site, "USER_SITE"):
usersite = site.USER_SITE.replace(appdata, "%APPDATA%")
userpath = os.path.dirname(usersite)
userscripts = os.path.join(userpath, "Scripts")
else:
userscripts = None

with winreg.CreateKey(HKCU, ENV) as key:
try:
envpath = winreg.QueryValueEx(key, PATH)[0]
except OSError:
envpath = DEFAULT
envpath, dtype = winreg.QueryValueEx(key, PATH)
except FileNotFoundError:
envpath, dtype = "", winreg.REG_EXPAND_SZ
except:
raise OSError("Failed to load PATH value")

userscripts = None
if hasattr(site, "USER_SITE"):
if dtype == winreg.REG_EXPAND_SZ:
usersite = site.USER_SITE.replace(appdata, "%APPDATA%")
userpath = os.path.dirname(usersite)
userscripts = os.path.join(userpath, "Scripts")
elif dtype == winreg.REG_SZ:
userpath = site.USER_SITE
userscripts = os.path.join(userpath, "Scripts")

paths = [envpath]
paths = []
for path in (pythonpath, scripts, userscripts):
if path and path not in envpath and os.path.isdir(path):
if path and path not in envpath:
paths.append(path)

envpath = os.pathsep.join(paths)
winreg.SetValueEx(key, PATH, 0, winreg.REG_EXPAND_SZ, envpath)
if envpath == "":
envpath = os.pathsep.join(paths)
else:
envpath = os.pathsep.join([envpath] + paths)
winreg.SetValueEx(key, PATH, 0, dtype, envpath)
return paths, envpath

def refresh_environment_variables():
HWND_BROADCAST = 0xFFFF
WM_SETTINGCHANGE = 0x001A
SMTO_ABORTIFHUNG = 0x0002
if not ctypes.windll.user32.SendMessageTimeoutW(
HWND_BROADCAST,
WM_SETTINGCHANGE,
0,
ENV,
SMTO_ABORTIFHUNG,
1000):
raise ctypes.WinError()

def main():
paths, envpath = modify()
if len(paths) > 1:
refresh_environment_variables()
print("Path(s) added:")
print('\n'.join(paths[1:]))
print('\n'.join(paths))
else:
print("No path was added")
print("\nPATH is now:\n%s\n" % envpath)
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