add index page

Author: khuyentran1401

data_science_tools/narwhals_row_ordering.py

@@ -28,6 +28,12 @@ def _(mo):
     return
 
 
+@app.cell
+def _(mo):
+    mo.md(r"""## Motivation""")
+    return
+
+
 @app.cell
 def _():
     from datetime import datetime
@@ -54,6 +60,24 @@ def _():
     return (data,)
 
 
+@app.cell
+def _(data, pd):
+    pdf = pd.DataFrame(data)
+    pdf["sales"] = pdf.groupby("store")["sales"].ffill()
+    pdf
+    return
+
+
+@app.cell
+def _(data, pl):
+    lazy_df = pl.DataFrame(data).lazy()
+    lazy_df.with_columns(
+        pl.col("sales").fill_null(strategy="forward").over("store")
+    ).collect()
+    # ⚠️ This may not work as expected unless you specify order_by="sale_date"
+    return
+
+
 @app.cell(hide_code=True)
 def _(mo):
     mo.md(r"""## Eager-only solution""")
@@ -90,7 +114,7 @@ def _(agnostic_ffill_by_store, data):
     # polars.DataFrame
     df_polars = pl.DataFrame(data)
     agnostic_ffill_by_store(df_polars)
-    return (df_pandas,)
+    return df_pandas, df_polars, pd, pl
 
 
 @app.cell
@@ -102,6 +126,13 @@ def _():
     return (duckdb_rel,)
 
 
+@app.cell
+def _():
+    # agnostic_ffill_by_store(duckdb_rel)
+    # Error: narwhals.exceptions.OrderDependentExprError: Order-dependent expressions are not supported for use in LazyFrame.
+    return
+
+
 @app.cell(hide_code=True)
 def _(mo):
     mo.md(r"""## Eager and lazy solution""")
@@ -130,6 +161,12 @@ def _(agnostic_ffill_by_store_improved, duckdb_rel):
     return
 
 
+@app.cell
+def _(agnostic_ffill_by_store_improved, df_polars):
+    agnostic_ffill_by_store_improved(df_polars.lazy()).collect()
+    return
+
+
 @app.cell
 def _(agnostic_ffill_by_store_improved, df_pandas):
     # Note that it still supports pandas

export_notebook.sh

@@ -24,6 +24,9 @@ uv run marimo export html "$notebook_name.py" -o "public/$notebook_name.html" --
 # Check if the export was successful
 if [ $? -eq 0 ]; then
     echo "Successfully exported $notebook_name.py to public/$notebook_name.html"
+    # Generate index.html
+    echo "Generating index.html..."
+    uv run scripts/generate_index.py
 else
     echo "Error: Failed to export notebook"
     exit 1