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20 hours ago •
sktime
sktime
[BUG] `skbase`'s pretty printing fails with an `AttributeError: '_VisualBlock' object has no attribute 'objs'` during a nested `Pipeline` call
Describe the bug
I was experimenting with combining sklearn and sktime Pipeline objects where I nested a sklearn Pipeline inside a sktime Pipeline. If I try to visualize the final compose estimator to the iPython console, I get hit with the an AttributeError.
To Reproduce
In a Jupyter code block:
from sklearn.pipeline import Pipeline as sklearnPipeline
from sklearn.preprocessing import StandardScaler
from sklearn.impute import SimpleImputer
from sktime.pipeline import make_pipeline
from sktime.classification.interval_based import TimeSeriesForestClassifier
sklearn_pipeline = sklearnPipeline([
('scaler', StandardScaler()),
('imputer', SimpleImputer()),
])
final_pipeline = make_pipeline(sklearn_pipeline, TimeSeriesForestClassifier())
final_pipeline
Output
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\IPython\core\formatters.py:344](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:344), in BaseFormatter.__call__(self, obj)
[342](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:342) method = get_real_method(obj, self.print_method)
[343](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:343) if method is not None:
--> [344](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:344) return method()
[345](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:345) return None
[346](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/IPython/core/formatters.py:346) else:
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_base.py:877](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:877), in BaseObject._repr_html_inner(self)
[870](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:870) def _repr_html_inner(self):
[871](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:871) """Return HTML representation of class.
[872](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:872)
[873](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:873) This function is returned by the @property `_repr_html_` to make
[874](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:874) `hasattr(BaseObject, "_repr_html_") return `True` or `False` depending
[875](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:875) on `self.get_config()["display"]`.
[876](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:876) """
--> [877](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_base.py:877) return _object_html_repr(self)
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:382](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:382), in _object_html_repr(base_object)
[371](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:371) fallback_msg = (
[372](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:372) "Please rerun this cell to show the HTML repr or trust the notebook."
[373](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:373) )
[374](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:374) out.write(
[375](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:375) f"<style>{style_with_id}</style>"
[376](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:376) f'<div id={container_id!r} class="sk-top-container">'
(...)
[380](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:380) '<div class="sk-container" hidden>'
[381](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:381) )
--> [382](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:382) _write_base_object_html(
[383](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:383) out,
[384](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:384) base_object,
[385](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:385) base_object.__class__.__name__,
[386](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:386) base_object_str,
[387](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:387) first_call=True,
[388](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:388) )
[389](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:389) out.write("</div></div>")
[391](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:391) html_output = out.getvalue()
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:147](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:147), in _write_base_object_html(out, base_object, base_object_label, base_object_label_details, first_call)
[145](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:145) # wrap element in a serial visualblock
[146](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:146) serial_block = _VisualBlock("serial", [est], dash_wrapped=False)
--> [147](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:147) _write_base_object_html(out, serial_block, name, name_details)
[148](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:148) out.write("</div>") # sk-parallel-item
[150](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:150) out.write("</div></div>")
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:142](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:142), in _write_base_object_html(out, base_object, base_object_label, base_object_label_details, first_call)
[140](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:140) for est, name, name_details in est_infos:
[141](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:141) if kind == "serial":
--> [142](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:142) _write_base_object_html(out, est, name, name_details)
[143](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:143) else: # parallel
[144](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:144) out.write('<div class="sk-parallel-item">')
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:147](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:147), in _write_base_object_html(out, base_object, base_object_label, base_object_label_details, first_call)
[145](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:145) # wrap element in a serial visualblock
[146](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:146) serial_block = _VisualBlock("serial", [est], dash_wrapped=False)
--> [147](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:147) _write_base_object_html(out, serial_block, name, name_details)
[148](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:148) out.write("</div>") # sk-parallel-item
[150](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:150) out.write("</div></div>")
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:142](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:142), in _write_base_object_html(out, base_object, base_object_label, base_object_label_details, first_call)
[140](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:140) for est, name, name_details in est_infos:
[141](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:141) if kind == "serial":
--> [142](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:142) _write_base_object_html(out, est, name, name_details)
[143](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:143) else: # parallel
[144](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:144) out.write('<div class="sk-parallel-item">')
File [c:\Users\sagar\miniconda3\envs\sktime-dev\lib\site-packages\skbase\base\_pretty_printing\_object_html_repr.py:138](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:138), in _write_base_object_html(out, base_object, base_object_label, base_object_label_details, first_call)
[136](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:136) kind = est_block.kind
[137](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:137) out.write(f'<div class="sk-{kind}">')
--> [138](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:138) est_infos = zip(est_block.objs, est_block.names, est_block.name_details)
[140](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:140) for est, name, name_details in est_infos:
[141](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/lib/site-packages/skbase/base/_pretty_printing/_object_html_repr.py:141) if kind == "serial":
AttributeError: '_VisualBlock' object has no attribute 'objs'
ClassifierPipeline(classifier=TimeSeriesForestClassifier(),
transformers=[TabularToSeriesAdaptor(transformer=Pipeline(steps=[('scaler', StandardScaler()), ('imputer', SimpleImputer())])),
ColumnConcatenator()])
Expected behavior
If such a compose estimator has no good representation, I'd expect it to simply print the signature rather than throwing an error when it fails to provide the visual representation.
Environment
# sktime.show_versions()
System:
python: 3.8.17 (default, Jul 5 2023, 20:44:21) [MSC v.1916 64 bit (AMD64)]
executable: [c:\Users\sagar\miniconda3\envs\sktime-dev\python.exe](file:///C:/Users/sagar/miniconda3/envs/sktime-dev/python.exe)
machine: Windows-10-10.0.22621-SP0
Python dependencies:
pip: 23.1.2
sktime: 0.25.0
sklearn: 1.2.2
skbase: 0.4.6
numpy: 1.24.3
scipy: 1.10.1
pandas: 2.0.3
matplotlib: 3.7.2
joblib: 1.3.1
numba: 0.57.1
statsmodels: 0.14.0
pmdarima: 2.0.3
statsforecast: 1.5.0
tsfresh: 0.20.1
tslearn: 0.5.3.2
torch: None
tensorflow: 2.13.0
tensorflow_probability: None
Additional context
