如何在Python中获取流程实例(带pid或监听端口)？

pip install psutil

import psutil

def get_process_pid(process_name):
    for proc in psutil.process_iter(['pid', 'name']):
        if proc.info['name'] == process_name:
            return proc.info['pid']
    return None

# 示例：获取Python进程的pid
pid = get_process_pid('python')
print(pid)

import psutil

def get_process_listening_ports(process_name):
    listening_ports = []
    for conn in psutil.net_connections():
        if conn.status == 'LISTEN' and conn.pid is not None:
            try:
                proc = psutil.Process(conn.pid)
                if proc.name() == process_name:
                    listening_ports.append(conn.laddr.port)
            except psutil.NoSuchProcess:
                pass
    return listening_ports

# 示例：获取Python进程的监听端口
ports = get_process_listening_ports('python')
print(ports)