Dropboxがアップデートするごとにレジストリ復活してうざいので

Dropbox_reg_killer.py

#!/usr/bin/env python3
import subprocess
import os
import re
# 管理者権限必須
# pyinstaller対応版

# https://qiita.com/nonzu/pxs/b4cb0529a4fc65f45463
def subprocess_args(include_stdout=True):
	if hasattr(subprocess, 'STARTUPINFO'):
		si = subprocess.STARTUPINFO()
		si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
		env = os.environ
	else:
		si = None
		env = None
	if include_stdout: ret = {'stdout': subprocess.PIPE}
	else: ret = {}
	ret.update({'stdin': subprocess.PIPE, 'stderr': subprocess.PIPE, 'startupinfo': si, 'env': env })
	return ret

s = subprocess.check_output(['reg', 'query', 'HKEY_CLASSES_ROOT\PackagedCom\Package'], text=True, shell=True, **subprocess_args(False))
for r in (str(s).split('\n')):
	if re.search(r'DropboxInc.Dropbox', r): subprocess.run(['reg', 'delete', r, '/f'], text=True, shell=True, **subprocess_args(True))