代码

class MyClass:
    def __init__(self,name):
        self.name = name
        
    def print_name(self):
        print("Hello", self.name)

m_class = MyClass("Python")
m_class.print_name()

输出：

Hello Python

其他

m_class = MyClass("Python")

实际上就是等于

m_class = object.__new__(MyClass)
MyClass.__init__(m_class,"Python")