方法1

import os
exe_path = "D:\\MyInstaller\\QQ9\\QQ.exe"
os.system(exe_path)

方法2

import subprocess
# 指定exe文件的路径
exe_path = "D:\\MyInstaller\\QQ9\\QQ.exe"
# 使用subprocess启动exe
process = subprocess.call(exe_path)

方法3

import subprocess
exe_path = "D:\\MyInstaller\\QQ9\\QQ.exe"
process = subprocess.Popen(exe_path, creationflags=subprocess.CREATE_NEW_CONSOLE)