Does Python have class prototypes (or forward declarations)?

by

Actually, all of the above are great observations about Python, but none of them will solve your problem.

Django needs to introspect stuff.

The right way to do what you want is the following:

class Car(models.Model):
    manufacturer = models.ForeignKey('Manufacturer')
    # ...

class Manufacturer(models.Model):
    # ...

Note the use of the class name as a string rather than the literal class reference. Django offers this alternative to deal with exactly the problem that Python doesn’t provide forward declarations.

This question reminds me of the classic support question that you should always ask any customer with an issue: “What are you really trying to do?”

More Related Contents:

  1. Understanding Python super() with __init__() methods [duplicate]
  2. Static class variables and methods in Python
  3. What is the purpose of the word ‘self’?
  4. What is the difference between old style and new style classes in Python?
  5. How do I call a parent class’s method from a child class in Python?
  6. Python function overloading
  7. difference between variables inside and outside of __init__()
  8. Explaining the ‘self’ variable to a beginner [duplicate]
  9. What is the difference between __init__ and __call__?
  10. What is the `self` parameter in class methods?
  11. Attaching a decorator to all functions within a class
  12. Private members in Python
  13. How do I access Class member variables in Python?
  14. List all base classes in a hierarchy of given class?
  15. Prevent creating new attributes outside __init__
  16. The scope of names defined in class block doesn’t extend to the methods’ blocks. Why is that?
  17. Difference between methods and attributes in python
  18. How to implement a binary search tree in Python?
  19. Python: how to “kill” a class instance/object?
  20. What is the purpose of the `self` parameter? Why is it needed?
  21. difference between variables inside and outside of __init__() (class and instance attributes)
  22. How do I access instance variables in Python?
  23. How do I access Class member variables?
  24. How do I set and access attributes of a class? [duplicate]
  25. How to assign a new class attribute via __dict__?
  26. What are the consequences of nesting classes? [closed]
  27. How do you change the value of one attribute by changing the value of another? (dependent attributes)
  28. Correctly extend a tkinter widget using inheritance
  29. Should I use a class or dictionary?
  30. Type Hinting for objects of type that’s being defined [duplicate]

Leave a Comment