如何添加和删除系统的环境变量“PATH”？ [英] How to add to and remove from system's environment variable "PATH"?

问题描述

我如何永久将路径添加到系统的环境变量PATH？

How do I permanently add the path to system's environment variable "PATH"?

我只想添加路径

此外，我要删除包含文件夹名称的所有路径，例如 \myprogram 是否它是：

Also I want to remove all paths that contain a folder name such as \myprogram whether it be:

C：\path\to\myprogram\dist; 或 D：\another\path\to\myprogram\dist;

推荐答案

import _winreg as reg
import win32gui
import win32con


# read the value
key = reg.OpenKey(reg.HKEY_CURRENT_USER, 'Environment', 0, reg.KEY_ALL_ACCESS)
# use this if you need to modify the system variable and if you have admin privileges
#key = reg.OpenKey(reg.HKEY_LOCAL_MACHINE, r'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', 0, reg.KEY_ALL_ACCESS) 
try
    value, _ = reg.QueryValueEx(key, 'PATH')
except WindowsError:
    # in case the PATH variable is undefined
    value = ''

# modify it
value = ';'.join([s for s in value.split(';') if not r'\myprogram' in s])

# write it back
reg.SetValueEx(key, 'PATH', 0, reg.REG_EXPAND_SZ, value)
reg.CloseKey(key)

# notify the system about the changes
win32gui.SendMessage(win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment')

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