Over in https://github.com/ipython/ipykernel/issues/1072, we noticed that sometimes getting the variables in a frame lists a function starting with a underscore as a normal variable, instead of grouping it with the function variables.
Here's a self-contained example illustrating the issue if run in ipython.
Install ipython and debugpy: pip install ipython debugpy
Create the repro.py file below:
repro.py
```python
# This is example reproduces code from https://github.com/ipython/ipykernel/blob/main/ipykernel/debugger.py
# This import is required to have the next ones working...
from debugpy.server import api # noqa
from _pydevd_bundle import pydevd_frame_utils # isort: skip
from _pydevd_bundle.pydevd_suspended_frames import ( # isort: skip
SuspendedFramesManager,
_FramesTracker,
)
class _FakeCode:
def __init__(self, co_filename, co_name):
self.co_filename = co_filename
self.co_name = co_name
class _FakeFrame:
def __init__(self, f_code, f_globals, f_locals):
self.f_code = f_code
self.f_globals = f_globals
self.f_locals = f_locals
self.f_back = None
class _DummyPyDB:
def __init__(self):
from _pydevd_bundle.pydevd_api import PyDevdAPI
self.variable_presentation = PyDevdAPI.VariablePresentation()
class VariableExplorer:
def __init__(self):
self.suspended_frame_manager = SuspendedFramesManager()
self.py_db = _DummyPyDB()
self.tracker = _FramesTracker(self.suspended_frame_manager, self.py_db)
self.frame = None
def track(self):
var = get_ipython().user_ns
self.frame = _FakeFrame(_FakeCode("", 'filename'), var, var)
self.tracker.track("thread1", pydevd_frame_utils.create_frames_list_from_frame(self.frame))
def untrack_all(self):
self.tracker.untrack_all()
def get_children_variables(self, variable_ref=None):
var_ref = variable_ref
if not var_ref:
var_ref = id(self.frame)
variables = self.suspended_frame_manager.get_variable(var_ref)
return [x.get_var_data() for x in variables.get_children_variables()]
# Create a variable explorer
v = VariableExplorer()
v.track()
# Define two functions, one starting with an underscore
def abc():
...
def _abc():
...
# Note that `abc` does not appear in the results, but `_abc` does appear in the results.
import pprint
pprint.pprint([v for v in v.get_children_variables() if 'abc' in v["name"]])
```
Run ipython repro.py. Notice that _abc is listed in the output, but abc is not listed in the output.
My confusion is: it appears that abc is grouped with function variables, which is why it doesn't appear in the output. Why is _abc not grouped with the function variables, i.e., why does it appear in the output?
Over in https://github.com/ipython/ipykernel/issues/1072, we noticed that sometimes getting the variables in a frame lists a function starting with a underscore as a normal variable, instead of grouping it with the function variables.
Here's a self-contained example illustrating the issue if run in ipython.
ipythonanddebugpy:pip install ipython debugpyrepro.pyfile below:repro.py
```python # This is example reproduces code from https://github.com/ipython/ipykernel/blob/main/ipykernel/debugger.py # This import is required to have the next ones working... from debugpy.server import api # noqa from _pydevd_bundle import pydevd_frame_utils # isort: skip from _pydevd_bundle.pydevd_suspended_frames import ( # isort: skip SuspendedFramesManager, _FramesTracker, ) class _FakeCode: def __init__(self, co_filename, co_name): self.co_filename = co_filename self.co_name = co_name class _FakeFrame: def __init__(self, f_code, f_globals, f_locals): self.f_code = f_code self.f_globals = f_globals self.f_locals = f_locals self.f_back = None class _DummyPyDB: def __init__(self): from _pydevd_bundle.pydevd_api import PyDevdAPI self.variable_presentation = PyDevdAPI.VariablePresentation() class VariableExplorer: def __init__(self): self.suspended_frame_manager = SuspendedFramesManager() self.py_db = _DummyPyDB() self.tracker = _FramesTracker(self.suspended_frame_manager, self.py_db) self.frame = None def track(self): var = get_ipython().user_ns self.frame = _FakeFrame(_FakeCode("ipython repro.py. Notice that_abcis listed in the output, butabcis not listed in the output.My confusion is: it appears that
abcis grouped with function variables, which is why it doesn't appear in the output. Why is_abcnot grouped with the function variables, i.e., why does it appear in the output?