Make limits for quick iteration toggleable

popcorn.py

@@ -12,7 +12,7 @@ with app.setup:
     import marimo as mo
     import polars as pl
 
-    LIMIT_ROWS = 500_000
+    LIMIT_ROWS = 50_000
     DATA_RAW_DIR = "data/raw"
     DATA_CLEAN_DIR = "data/cleaned"
     DATA_PARQUET_DIR = "data/parquet"
@@ -153,8 +153,9 @@ def _():
         )
         .drop("file")
         .fill_null(0)
-        .head(LIMIT_ROWS)  # FIXME: take out after debug
     )
+    if LIMIT_ROWS: # NOTE: this is only for debugging purposes
+        df_pkg_lazy = df_pkg_lazy.head(LIMIT_ROWS)
     # give small df preview
     df_pkg_lazy.head(100).collect(engine="streaming")
     return
@@ -396,14 +397,13 @@ def _():
             .alias("major_ver"),
             pl.col("kernel").str.replace(r"(\d+\.\d+).*", "${1}").alias("minor_ver"),
         )
-        .head(LIMIT_ROWS)  # FIXME: take out after debug
     )
 
     kernel_df_v99 = (
         kernel_df_lazy.filter(pl.col("major_ver") == 99).collect(engine="streaming").select("date")
     )
-
     kernel_df_lazy = kernel_df_lazy.filter(pl.col("major_ver") != 99)
+
     (
         lp.ggplot(
             kernel_df_lazy.with_columns(pl.col("major_ver").cast(pl.String))