staticmethod

class Mysql:

	def __init__(self,ip,port):
		self.ip = ip
		self.port = port
	@staticmethod
	def create_id():
		import uuid
		return uuid.uuid4()

obj = Mysql('127.0.0.1','3306')

## 像普通函数一样调用就可以，不会自动传参，需要人工传参
print(Mysql.create_id())  ## 57c42038-b169-4f25-9057-d83795d097cc
print(obj.create_id()) ## 485372bc-efca-4da8-a446-b11c7bbf3c9b