Cannot expand attributes of int subclass in Variables, Watch or Debug Console

[laundmo]

Problem

Subclasses of int (and other "primitives") cannot be expanded and their attributes cannot be inspected.

Reproduction

Debug this python file:

class SomeIntSubclass(int):
    def some_method(self):
        pass


class SomeClass:
    def some_method(self):
        pass


normal_instance = SomeClass()
int_instance = SomeIntSubclass(1)
breakpoint()

As you can see, there's no toggle to expand/collapse the attributes list

Solutions

I've orderd solutions i can think of in order of preference

• Instead of using isinstance(x, int) or a equivalent to check whether a variable is a primitive type, use type(x) is int so only subclasses show up as normal instances.
• A setting to treat all values, be they "primitives" or not, as objects which can be inspected
• A special cased command, function, or similar in the Debug Console to inspect a "primitive" as if it was a normal instance

[rchiodo]

Thanks for the suggestion. I believe this would need some sort of setting

Internally debugpy just does a __repr__ on most variables. That code is here:

debugpy/src/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_safe_repr.py

Line 12 in 5014f25

class SafeRepr(object):

.

Transferring to a discussion item for upvotes.

[laundmo]

I had not thought of this as a feature suggestion as it seems to be a bug in how debugpy, pydevd, or whatever actually does this decides whether to display a simple repr or the expandable inspection thingie.

Does this move to discussions mean debugpy devs don't consider this behaviour a bug?