python 如何宣告外部dll函数 或者类

python 如何宣告外部dll函数 或者类

比如我要调用win默认的邮件程序发送邮件
用vb、vc是
Public Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long

ShellExecute 0, "", "mailto:", "", "", 5


这段代码用 python怎么改写
from ctypes import *
shell32=windll.LoadLibrary("shell32.dll")
ShellExecute=shell32.ShellExecuteA
学习当中,多谢分享