생성자 : 인스턴스 생성과 동시에 자동으로 호출되는 메서드
>>> class MyClass:
			def __init__(self):
				print("객체가 생성되었습니다.")
>>> class BusinessCard:
	def __init__(self, name, email, addr):
		self.name = name
		self.email = email
		self.addr = addr
	def print_info(self):
		print("-------------------------")
		print("Name: ", self.name)
		print("E-mail: ", self.email)
		print("Address: ", self.addr)
		print("-------------------------")
>>> member3 = BusinessCard("Jung", "yooil@naver.com", "Incheon")
>>> member3.print_info()
-------------------------
Name:  Jung
E-mail:  yooil@naver.com
Address:  Incheon
-------------------------