Initialization actions execute only once

PCJ # 
class PCJ (Object): 
　　# class property records to see if executed initialization method 
    init_flag = False 

    DEF __init __ (Self): 
　　　　　　# If the class attribute is true, direct return 
        IF Pcj.init_flag: 
            return 
　　　　　　# otherwise perform the initial shipment method 
        print ( "performs initialization method") 
 　　　　　　# after execution, modify the value True 
        Pcj.init_flag = True 

P1 = PCJ () 
P2 = PCJ ()