Removed, Added Objects

Errors are produced when all kinds of objects - classes, functions, methods and other - are removed from or added to public API.

The removed-object, added-object errors are a generic catch-all for all kinds of objects. Where possible, an error is produced with a more specific type.

Error codes

Code	Name
B100	removed-object
B120	removed-function
B130	removed-method
B140	removed-class
N200	added-object
N220	added-function
N230	added-method
N240	added-class

Example

Initial version of code:

# In cafe/__init__.py
class CoffeeMachine:
    def make_cappucino(self, size):
        ...

    def make_latte(self, size):
        ...

    def make_black_tea(self, size):
        ...

Updated version:

# Now there's a default size
DEFAULT_SIZE = 'large'

class CoffeeMachine:
    def make_cappucino(self, size):
        ...

    def make_latte(self, size):
        ...

    # coffee machines don't make tea...
    #def make_black_tea(self, size):

This change will produce errors such as:

cafe/__init__.py:0: N200 object added: DEFAULT_SIZE
cafe/__init__.py:3: B120 function removed: make_black_tea