windows获取python进程的pid

import psutil
import os

def get_pid(name=None):
    if name is None:
        name=os.path.split(__file__)[-1]
    for proc in psutil.process_iter():
        if 'python.exe'==proc.name().lower():
            cmd_line=proc.cmdline()
            script_name=None
            for cl in cmd_line:
                if 'py'==cl.split('.')[-1]:
                    script_name=os.path.split(cl)[-1]
                    if script_name==name:
                        return proc.pid,cl
    return None,None
pid,script=get_pid()
print(pid,script)