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docs: use head() to get top n results, not to preview results #190

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Merged
merged 3 commits into from
Nov 13, 2023
Merged

docs: use head() to get top n results, not to preview results #190

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docs: use head() to get top results, not to preview results
tswast Nov 9, 2023
a71b90e
Merge branch 'main' into tswast-patch-2
tswast Nov 10, 2023
6461191
Merge branch 'main' into tswast-patch-2
tswast Nov 13, 2023
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13 changes: 10 additions & 3 deletions samples/snippets/pandas_methods_test.py
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Expand Up @@ -22,13 +22,20 @@ def test_bigquery_dataframes_pandas_methods():
bq_df = bpd.read_gbq(query_or_table)

# Inspect one of the columns (or series) of the DataFrame:
bq_df["body_mass_g"].head(10)
bq_df["body_mass_g"]

# Compute the mean of this series:
average_body_mass = bq_df["body_mass_g"].mean()
print(f"average_body_mass: {average_body_mass}")

# Calculate the mean body_mass_g by species using the groupby operation:
bq_df["body_mass_g"].groupby(by=bq_df["species"]).mean().head()
# Find the heaviest species using the groupby operation to calculate the
# mean body_mass_g:
(
bq_df["body_mass_g"]
.groupby(by=bq_df["species"])
.mean()
.sort_values(ascending=False)
.head(10)
)
# [END bigquery_dataframes_pandas_methods]
assert average_body_mass is not None