_____________________ [doctest] groupby.GroupBy.expanding ______________________
[gw3] linux -- Python 3.12.0 /tmpfs/src/github/python-bigquery-dataframes/.nox/doctest/bin/python
976 
977         **Examples:**
978 
979             >>> import bigframes.pandas as bpd
980             >>> import numpy as np
981             >>> bpd.options.display.progress_bar = None
982 
983             >>> lst = ['a', 'a', 'c', 'c', 'e']
984             >>> ser = bpd.Series([1, 0, -2, -1, 2], index=lst)
985             >>> ser.groupby(level=0).expanding().min()
UNEXPECTED EXCEPTION: AttributeError("'BooleanColumn' object has no attribute 'astype'")

nox > python -m pip install .
nox > python -m pip install pytest-mock jinja2 pandas-stubs google-cloud-testutils 'pytest<8.0.0dev' tabulate pytest-xdist openpyxl types-setuptools pytest-cov freezegun types-requests types-protobuf asyncmock xarray mypy types-python-dateutil types-tabulate mock polars pytest-retry pytest-timeout pytest-asyncio
nox > mypy bigframes tests/system tests/unit --check-untyped-defs --explicit-package-bases '--exclude="^third_party"'
[bigframes/core/compile/compiled.py:925](https://cs.corp.google.com/piper///depot/google3/bigframes/core/compile/compiled.py?l=925): error: "BooleanValue" has no attribute "astype"  [attr-defined]
Found 1 error in 1 file (checked 297 source files)
nox > Command mypy bigframes tests/system tests/unit --check-untyped-defs --explicit-package-bases '--exclude="^third_party"' failed with exit code 1
nox > Session mypy failed.
nox > Ran multiple sessions:
nox > * lint: success
nox > * lint_setup_py: success
nox > * mypy: failed