未调用基类'*'的Pylint错误__init__方法

Question

I have an pylint error:

__init__ method from base class 'night' is not called

I have a file called day_night.py:

// is_it_night returns True False depending on the time
import is_it_night

class Day():

   def __init__(self):
       // dosomething

class Night():

    def __init__(self):
        // dosomethingdifferent   
what_time = Day

if is_it_night():
    what_time = Night

Now I have a class called instance.py which looks like this:

from day_night import what_time

class instance(day_night):

   def __init__(self):
      what_time.__init__(self)

And now I get the pylint error on incstance.py that

 __init__ method from base class 'night' is not called

How do I fix this, I tried super but that creates other problems

if i do instance.py

from day_night import what_time

class instance(day_night):

   def __init__(self):
      super(instance, self).__init__(self)

I get the following error: use super on old style class

And I would prefer not to do # pylint: disable=

Answer 1

Your problem seems to be

from day_night import what_time

class instance(day_night):
   what_time.__init__(self)

Here

from day_night import what_time

you import the class what_time , and from this you should derive.

So do

class instance(what_time): # instance is wrongly named...
    def __init__(self):
        super(instance, self).__init__() # here you do the requested call

or, if you cannot change your classes to new.style classes for some reason (just derive from object additionally), you can do

class instance(what_time): # instance is wrongly named...
    def __init__(self):
        what_time.__init__(self) # here you do the requested call

Or, as m170897017 suggests, omit the __init__ altogether:

class instance(what_time): # instance is wrongly named...
    pass

Answer 2

From my understanding, you want to do something in Day/Night initialization from instance.py.

Change code in instance.py to:

from day_night import what_time

class myInstance(what_time):
    pass
    # do something, other than defining a __init__() function
m = myInstance()

If you don't define a __init__() in subclass, when it's instancing, __init__() from baseclass will be invoked.

Tell me if it works.