问当pinging返回值为1而不是0时，如何使“目标主机不可访问”

EN

import platform
import subprocess
import smtplib
import time

#Delay to wait for Rigs to Boot
#time.sleep(600)

a = 1
while 1==1:
    #Ping other PC's
    def myping(host):
    parameter = '-n' if platform.system().lower()=='windows' else '-c'
    command = ['ping', parameter, '1', host]
    response = subprocess.call(command)

    if response == 0:
        return True
    #Will Send email if response from ping is false (aka not pingable/down)
    else:

        gmail_user = 'email'
        gmail_password = 'password'

        sent_from = gmail_user
        to = ['recepient']
        subject = 'subject'
        body = 'body'

        email_text = """\
        From: %s
        To: %s
        Subject: %s

        %s
        """ % (sent_from, ", ".join(to), subject, body)

        try:
            smtp_server = smtplib.SMTP_SSL('smtp.gmail.com', 465)
            smtp_server.ehlo()
            smtp_server.login(gmail_user, gmail_password)
            smtp_server.sendmail(sent_from, to, email_text)
            smtp_server.close()
            print ("Email sent successfully!")
        except Exception as ex:
            print ("Something went wrong….",ex)
    
    #delay so i dont recieve spam emails while the 'while' loop runs
    time.sleep(43000)


print(myping("ip to ping"))