python 根据进程名 python判断进程状态

import os
import psutil
class Pid:
def __init__(self,file="run.pid"):
self.file = file
def write(self):
pid = os.getpid()
with open(self.file, "w") as f:
f.write(str(pid))
return pid
def read(self):
if os.path.exists(self.file):
with open(self.file, "r") as f:
return f.read()
else:
return '0'
def checkRun(self):
pid = int(self.read())
# 通过检查 记录的 pid 是否在 当前运行的pid列表中 来判断是否已经运行了该程序本身
if pid>0 and pid in psutil.pids():
return True
else:
return False
if __name__ == "__main__":
pid =Pid()
pid.write()
print(pid.read())

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