how to declare uninitialized variable in class definition in python -

i come matlab background. when create class definitions, can instantiate "empty" variable names , later assign values or objects them. i.e.

classdef myclass < handle      properties         var1         var2     end  end  = myclass; a.var1 = someotherclassobject;

how do in python? tried this:

class myclass: def __init__(self):     var1      var2  = myclass() a.var1 = someotherclassobject()

but that's not correct. main purpose build definition of class, structure, , later go , instantiate variables needed.

and appreciated.

you need use self. create variables instances (objects)

i not think can have uninitialized name in python, instead why not initialize instance variables none ? example -

class myclass:     def __init__(self):         self.var1 = none          self.var2 = none

you can later go , set them whatever want using -

a = myclass() a.var1 = someotherclassobject

if need define class variables (that shared across instances) , need define them outside __init__() method, directly inside class -

class myclass:     var1 = none     var2 = none     def __init__(self):         pass

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