oop - optional arguments in initializer of python class -

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I was thinking that someone quickly explains how to define user-defined objects efficiently and in a dragon manner with alternative arguments Prepare For example, I want to create this object: 

  square object: def __init __ (self, some_other_object, i, * j, * k): self.some_other_object = some_other_object self.i = I # If J is specified, then assume that it is = i if (j == none): self.j = i else: self.j = j # if k is given, value 0 if (k = = None): self.k = 0 and: self.k = k   
 Is there a better way of doing this?  
  Edit:  I have changed the code so that it is understood more comprehensive and more easily.   
 
 
 You can define the default parameters:  
  class optical transition (Object): def __init __ (self, chemical, i, j = none, k = 0) self.chemical = chemical self.i = i self.k = k self.j = j if j is not, no more No I   
 If you do not explicitly call the class with  j  and  k , they will use those default  
 When you create an object, then you use all four parameters as usual. You can:  optical transition ('sodium', 5, 100, 27) . If you want to use the default value for  j  but not for  k , then you can also by defining the name of the parameter:  optical Transition ('sodium', 5, k = 27) .

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