i am using python smtplib mail server program ,it shows error connection refused target machine not connected 10061

source code
Code:
    import smtplib
    sobj=smtplib.SMTP("smtp.gmail.com")
    sender="[email protected]"
    rec="[email protected]"
    msg=""hi"
    
    Subject: Test
   
    sobj.sendmail(sender,rec,msg)