Flips network connection in Windows.

proxy_switch.py

import wmi
from _winreg import *
NETWORK_NAME = 'Local Area Connection'
REG_KEY = 'Software\Microsoft\Windows\CurrentVersion\Internet Settings'


def main():
    c = wmi.WMI()
    key = OpenKey(HKEY_CURRENT_USER, REG_KEY, 0, KEY_WRITE)
    adapter = [a for a in c.Win32_NetworkAdapter()
               if a.NetConnectionID == NETWORK_NAME][0]

    is_enabled = adapter.NetEnabled
    if is_enabled:
        adapter.Disable()
        SetValueEx(key, "ProxyEnable", 0, REG_DWORD, 0)
        print('Disabled')
    else:
        adapter.Enable()
        SetValueEx(key, "ProxyEnable", 0, REG_DWORD, 1)
        print('Enabled')
    CloseKey(key)


if __name__ == '__main__':
    main()