Python中请大家指点

class MyType(type):
def init(self, what, bases=None, dict=None):
print(‘call myType.init()’)
print(“class name:”+what)
print(“class bases:”+str(bases))
print(“class attributions:”+str(dict))
super().init(what, bases, dict)
def new(cls, name, bases, attrs):
print(“call MyType.new()”)
return type.new(cls, name, bases, attrs)
class Foo(object):
metaclass = MyType #语句 1
def init(self, name=None):

self.name = name
print(“Foo.init self=”, self)
print(“Foo self.name=”, self.name)
def new(cls, *args, **kwargs):
print(“Foo.new cls=”, cls)
return(object.new(cls, *args, **kwargs))
def call(self, cls):
print(“Foo.call cls=”, cls)
print(“Foo.call self=”, self)
def func(self):
print(‘function is there’)
class studen(Foo):
print(“studen(Foo)”) #语句 2
def init(self, name=None):

print(“studen.init self=”, self)


class Foo2(object):
“”“docstring for Foo2"”"
def init(self):
print(‘Foo2.init self.class=’, self.class)
print(“Foo2.init type(self)=”, type(self))


if name == ‘main’:
print("---------test1---------") #语句 3
obj2=Foo() #语句 4
print("---------test2---------")
print(“test2 type=”, type(studen()))
print("---------test3---------")
print(“test3 type=”, type(Foo2()))

上面这段代码的输出如下：
studen(Foo)
---------test1---------
Foo.new cls=

Foo.init self= <main.Foo object at 0x01C2A270>
Foo self.name= None
---------test2---------
Foo.new cls=

studen.init self= <main.studen object at 0x01C2A350>
test2 type=

---------test3---------
Foo2 self.class=

Foo2 type(self)=

test3 type=




我的问题如下：
1、为何语句 2 会在语句 3 之前先执行了？是不是因为类定义中的不在__new__()、init()和__call__()的方法之内的语句都会在模块被加载的时候立即执行？
2、在语句 1 中，我已经指定 Foo 类要由 MyType 类来实例化创建，为何执行语句 4 的时候，类 MyType 定义中的__new__()和__init__()方法都没有被首先执行？

恳请指点，感谢！
Python中请大家指点