feat(plotnine): implement lollipop-basic (#9599)

## Implementation: `lollipop-basic` - python/plotnine

Implements the **python/plotnine** version of `lollipop-basic`.

**File:** `plots/lollipop-basic/implementations/python/plotnine.py`

**Parent Issue:** #934

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:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/anyplot/actions/runs/28496693186)*

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Markus Neusinger <2921697+MarkusNeusinger@users.noreply.github.com>

Author: github-actions[bot]

plots/lollipop-basic/implementations/python/plotnine.py

@@ -1,22 +1,32 @@
 """ anyplot.ai
 lollipop-basic: Basic Lollipop Chart
-Library: plotnine 0.15.3 | Python 3.14.4
-Quality: 85/100 | Updated: 2026-04-26
+Library: plotnine 0.15.7 | Python 3.13.14
+Quality: 84/100 | Updated: 2026-07-01
 """
 
 import os
+import sys
+
+
+# Prevent circular import: remove this script's directory from sys.path so
+# "from plotnine import ..." resolves to the installed library, not this file.
+_here = os.path.dirname(os.path.abspath(__file__))
+sys.path = [p for p in sys.path if os.path.abspath(p) != _here]
 
 import pandas as pd
 from plotnine import (
     aes,
+    element_blank,
     element_line,
     element_rect,
     element_text,
     geom_point,
     geom_segment,
+    geom_text,
     ggplot,
     ggsave,
     labs,
+    scale_size_continuous,
     theme,
     theme_minimal,
 )
@@ -28,7 +38,7 @@
 INK_SOFT = "#4A4A44" if THEME == "light" else "#B8B7B0"
 BRAND = "#009E73"
 
-# Data - Product sales by category, sorted by value
+# Product sales by category, sorted ascending for ranking narrative
 data = {
     "category": [
         "Electronics",
@@ -48,28 +58,37 @@
 df = pd.DataFrame(data)
 df = df.sort_values("value", ascending=True).reset_index(drop=True)
 df["category"] = pd.Categorical(df["category"], categories=df["category"], ordered=True)
+df["label"] = df["value"].astype(str) + "k"
 
-# Plot
 plot = (
     ggplot(df, aes(x="category", y="value"))
-    + geom_segment(aes(x="category", xend="category", y=0, yend="value"), color=BRAND, size=1.5)
-    + geom_point(color=BRAND, size=6, fill=BRAND)
-    + labs(x="Product Category", y="Sales (thousands $)", title="lollipop-basic · plotnine · anyplot.ai")
+    + geom_segment(aes(x="category", xend="category", y=0, yend="value"), color=BRAND, size=0.6)
+    + geom_point(aes(size="value"), color=BRAND, fill=BRAND, show_legend=False)
+    + geom_text(
+        aes(label="label"),
+        color=INK_SOFT,
+        size=2.8,  # geom_text size is in mm (~2.8mm ≈ 8pt at dpi=400)
+        nudge_y=16,
+        va="bottom",
+    )
+    + scale_size_continuous(range=[2, 7])
+    + labs(x="Product Category", y="Sales (thousands $)", title="lollipop-basic · python · plotnine · anyplot.ai")
     + theme_minimal()
     + theme(
-        figure_size=(16, 9),
+        figure_size=(8, 4.5),
         plot_background=element_rect(fill=PAGE_BG, color=PAGE_BG),
         panel_background=element_rect(fill=PAGE_BG, color=PAGE_BG),
-        text=element_text(size=14, color=INK),
-        axis_title=element_text(size=20, color=INK),
-        axis_text=element_text(size=16, color=INK_SOFT),
+        panel_border=element_blank(),
+        text=element_text(size=7, color=INK),
+        axis_title=element_text(size=10, color=INK),
+        axis_text=element_text(size=8, color=INK_SOFT),
         axis_text_x=element_text(angle=45, ha="right", color=INK_SOFT),
         axis_line=element_line(color=INK_SOFT),
-        plot_title=element_text(size=24, color=INK),
-        panel_grid_minor=element_line(alpha=0),
-        panel_grid_major_x=element_line(alpha=0),
+        plot_title=element_text(size=12, color=INK),
+        panel_grid_minor=element_blank(),
+        panel_grid_major_x=element_blank(),
         panel_grid_major_y=element_line(color=INK, alpha=0.15, size=0.3),
     )
 )
 
-ggsave(plot, filename=f"plot-{THEME}.png", dpi=300, width=16, height=9)
+ggsave(plot, filename=f"plot-{THEME}.png", dpi=400, width=8, height=4.5, units="in")