First day for introducing me

 """
  This is first python3 script code for lyp in Bokeyuan
  __author__="lyp"
  2018.0920
  """ 

 class PersonInfo:
     def __init__(self,name=None,age=None,gender=None,career=None):
         self.name=name
         self.age=age
         self.gender=gender
         self.career=career

     def hello_world(self):
         print("Hello World!\nHello Bokeyuan!\nBetter World and Better Day!")
         return(1)
     def prin_info(self):
         print("My name is {}.".format(self.name))
         print("I am {} years old.".format(self.age))
         print("I am a {}.".format(self.gender))
         print("My career is {}, and I love python.".format(self.career))
         return(1)

 def main():
     lyp=PersonInfo(name="lyp",age=27,gender="Man",career="AE")
     lyp.hello_world()
     lyp.prin_info()

 if __name__=="__main__":
     main()