How to create a list of objects

Question

How do I go about creating a list of objects  class instances  in Python  Or is this a result of bad design  I need this cause I have different objects and I need to handle them at a later stage  so I would just keep on adding them to a list and call them later

User · Accepted Answer

Storing a list of object instances is very simple  class MyClass object       def   init   self  number           self number   number  my objects       for i in range 100       my objects append MyClass i      later  for obj in my objects      print obj number

User · Answer

You can create a list of objects in one line using a list comprehension   class MyClass object   pass  objs    MyClass   for i in range 10    print objs

User · Answer

if my list is the list that you want to store your objects in it and my object is your object wanted to be stored  use this structure   my list append my object

User · Answer

I have some hacky answers that are likely to be terrible    but I have very little experience at this point     a way   class myClass        myInstances          def   init   self  myStr01  myStr02           self myStr01   myStr01         self myStr02   myStr02         self   class   myInstances append self   myObj01   myClass  Foo    Bar   myObj02   myClass  FooBar     Baz    for thisObj in myClass myInstances      print thisObj myStr01      print thisObj myStr02    A hack way to get this done   import sys class myClass        def   init   self  myStr01  myStr02           self myStr01   myStr01         self myStr02   myStr02  myObj01   myClass  Foo    Bar   myObj02   myClass  FooBar     Baz    myInstances      myLocals   str locals    split      thisStep   0 for thisLocalsLine in myLocals      thisStep    1     if  myClass object at  in thisLocalsLine          print thisLocalsLine          print myLocals  thisStep - 2             myInstances append myLocals  thisStep - 2            print myInstances          myInstances append getattr sys modules   name     myLocals  thisStep - 2      for thisObj in myInstances      print thisObj myStr01      print thisObj myStr02    Another more  clever  hack   import sys class myClass        def   init   self  myStr01  myStr02           self myStr01   myStr01         self myStr02   myStr02  myInstances      myClasses          myObj01     Foo    Bar         myObj02     FooBar     Baz          for thisClass in myClasses keys        exec   s   myClass   s     s       thisClass  myClasses thisClass  0   myClasses thisClass  1        myInstances append getattr sys modules   name     thisClass    for thisObj in myInstances      print thisObj myStr01      print thisObj myStr02

User · Answer

I think what you re of doing here is using a structure containing your class instances  I don t know the syntax for naming structures in python  but in perl I could create a structure obj id x  where x is an incremented integer  Then  I could just refer back to the specific class instance I needed by referencing the struct numerically  Is this anything in the direction of what you re trying to do

User · Answer

In Python  the name of the class refers to the class instance   Consider   class A  pass class B  pass class C  pass  lst    A  B  C     instantiate second class b instance   lst 1    print b instance

User · Answer

The Python Tutorial discusses how to use lists   Storing a list of classes is no different than storing any other objects   def MyClass object       pass  my types    str  int  float  MyClass

[python] How to create a list of objects?

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