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feat: Support display.max_colwidth option #2053

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Merged
merged 1 commit into from
Sep 5, 2025
Merged

feat: Support display.max_colwidth option #2053

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3 changes: 3 additions & 0 deletions bigframes/_config/display_options.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ class DisplayOptions:
progress_bar: Optional[str] = "auto"
repr_mode: Literal["head", "deferred", "anywidget"] = "head"

max_colwidth: Optional[int] = 50
max_info_columns: int = 100
max_info_rows: Optional[int] = 200000
memory_usage: bool = True
Expand All @@ -52,6 +53,8 @@ def pandas_repr(display_options: DisplayOptions):
so that we don't override pandas behavior.
"""
with pd.option_context(
"display.max_colwidth",
display_options.max_colwidth,
"display.max_columns",
display_options.max_columns,
"display.max_rows",
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24 changes: 24 additions & 0 deletions tests/system/small/test_dataframe.py
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Expand Up @@ -888,6 +888,30 @@ def test_join_repr(scalars_dfs_maybe_ordered):
assert actual == expected


def test_repr_w_display_options(scalars_dfs, session):
metrics = session._metrics
scalars_df, _ = scalars_dfs
# get a pandas df of the expected format
df, _ = scalars_df._block.to_pandas()
pandas_df = df.set_axis(scalars_df._block.column_labels, axis=1)
pandas_df.index.name = scalars_df.index.name

executions_pre = metrics.execution_count
with bigframes.option_context(
"display.max_rows", 10, "display.max_columns", 5, "display.max_colwidth", 10
):

# When there are 10 or fewer rows, the outputs should be identical except for the extra note.
actual = scalars_df.head(10).__repr__()
executions_post = metrics.execution_count

with display_options.pandas_repr(bigframes.options.display):
pandas_repr = pandas_df.head(10).__repr__()

assert actual == pandas_repr
assert (executions_post - executions_pre) <= 3


def test_repr_html_w_all_rows(scalars_dfs, session):
metrics = session._metrics
scalars_df, _ = scalars_dfs
Expand Down