Normal processing method for pause of Python program

import psutil
p = (pid)
()  #Suspend process()  #Recovery process

Process:
import threading
from time import ctime, sleep
import ThreadInReadAndWriteProblem
import multiprocessing
import os
class Process():  
  def __init__(self):
    .__init__(self) #Manually implement parent class    pid = ()
  def run(self):
    print 'Current running process PID: %s' %  #The id of the child thread is the same as the pid of the parent process. It belongs to the same process    for i in range(0,5):
      r = ()
      w = ()
      ()
      ()
 print 'Process blocking'
    sleep(10)  #Total running time 10 secondsReader&Writer
import threading
from time import ctime, sleep
import os
mutex = ()  #mutex lockmutex_readercount = () #Mutex during counting Calculate the number of currently being readreaderCount = 0 number = 0
#The condition does not meet the blocking stateclass Reader():    #reader  def __init__(self):
    .__init__(self) #Inherit the parent class constructor  def run(self):
    global mutex
    global readerCount
    #print 'Thread PID: %s ' %()    while True:
       mutex_readercount.acquire()
       readerCount +=1
       if readerCount == 1:
         print 'Reader process is waiting, number %s' %()
         () == False   # The first one needs to apply       mutex_readercount.release()
       print 'Start read, reader number %s , now time is %s' %(,ctime())
       sleep(2)
       print 'Complete reading, reader number %s , now time is %s' %(,ctime())
       mutex_readercount.acquire()
       readerCount -= 1
       if readerCount == 0:  #All readers complete          print 'The last reader completes reading'
          ()
       mutex_readercount.release()
class Writer():   #Writer  def __init__(self):
    .__init__(self)
  def run(self):
    global mutex
    global writerCount
    #print 'Thread PID: %s' %()    while True:
      print 'Writer process waiting number: %s' %()
      ()       
      print 'Start writing Number: %s Now time is: %s ' %(,ctime())
      sleep(5)
      print 'End write number: %s Now time is %s' %(,ctime())
      ()

import ThreadInReadAndWriteProblem
import SingleProcessSchedulerMultiprocess
import psutil
import Scheduler
from time import ctime, sleep
def main():
  p = ()
  ()
  sleep(3)
  stop()
  print 'Process suspended %s' %ctime()
  sleep(5)
  wake()
  print 'Wake up process %s' %ctime()
def stop(pid):
    print 'Process Pause Process Number %s' %(pid)
    p = (pid)
    ()
def wake(pid):
    print 'Process Recovery Process Number %s' %(pid)
    p = (pid)
    ()
if __name__ == '__main__':
  main()