Python TypeError:\类\必须设置为类

Python版本：2.7.8

单击此处查看： -错误：-

TypeError:\类\必须设置为类

此错误发生在第7行/第9行，具体取决于在Web.py self中传递的版本

---

->创建的对象是Web.py的，如果混合使用旧式经典类和新式类，则在Python2中可能会发生此异常

>>> class A(object):
...     # New style class (inherits from object)
...     pass
... 
>>> class B:
...    # Classic class - does not inherit from object
...    # or any other new-style class
...     def __init__(self):
...         self.__class__ = A
... 
>>> B()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 3, in __init__
TypeError: __class__ must be set to a class

---

如果您是从Python3示例中创建Python2代码，那么意识到这种差异是很重要的

适用于我的python 2.7.10。请发布一个合适的MCVE和python版本-我们不会仅仅为了测试它而重新创建所有目录结构。提供目录结构是为了让您清楚地了解代码结构，而不是为了在您的终端重新创建目录。谢谢你。

from other_dir import BaseParent

class Base(BaseParent):
    def login(self):
        pass

from Dir import Base

class Gui_A(Base):
    def __init__(self):
        super(Gui_A, self).__init__()

from Dir import Base

class Gui_B(Base):
    def __init__(self):
        super(Gui_B, self).__init__()

from Dir.dir1.gui_a import Gui_A
from Dir.dir1.gui_b import Gui_B

class Web():
    def __init__(self, version):
        if version == 'gen1':
            self.__class__ = Gui_A
        elif version == 'gen2':
            self.__class__ = Gui_B


if __name__ == "__main__":
    ob = Web("gen1")

>>> class A(object):
...     # New style class (inherits from object)
...     pass
... 
>>> class B:
...    # Classic class - does not inherit from object
...    # or any other new-style class
...     def __init__(self):
...         self.__class__ = A
... 
>>> B()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 3, in __init__
TypeError: __class__ must be set to a class

>>> type(A)
<type 'type'>
>>> type(B)
<type 'classobj'>

class A:
    pass