feat(letsplot): implement line-basic

plots/line-basic/implementations/python/letsplot.py

@@ -1,47 +1,75 @@
-""" pyplots.ai
+""" anyplot.ai
 line-basic: Basic Line Plot
-Library: letsplot 4.8.1 | Python 3.13.11
-Quality: 92/100 | Created: 2025-12-23
+Library: letsplot 4.9.0 | Python 3.13.13
+Quality: 88/100 | Updated: 2026-04-29
 """
 
+import os
+
 import numpy as np
 import pandas as pd
-from lets_plot import *  # noqa: F403
-from lets_plot.export import ggsave as export_ggsave
+from lets_plot import (
+    LetsPlot,
+    aes,
+    element_blank,
+    element_line,
+    element_rect,
+    element_text,
+    geom_line,
+    geom_point,
+    ggplot,
+    ggsize,
+    labs,
+    scale_x_continuous,
+    theme,
+    theme_minimal,
+)
+from lets_plot.export import ggsave
+
 
+LetsPlot.setup_html()
 
-LetsPlot.setup_html()  # noqa: F405
+# Theme tokens
+THEME = os.getenv("ANYPLOT_THEME", "light")
+PAGE_BG = "#FAF8F1" if THEME == "light" else "#1A1A17"
+ELEVATED_BG = "#FFFDF6" if THEME == "light" else "#242420"
+INK = "#1A1A17" if THEME == "light" else "#F0EFE8"
+INK_SOFT = "#4A4A44" if THEME == "light" else "#B8B7B0"
+RULE = "rgba(26,26,23,0.12)" if THEME == "light" else "rgba(240,239,232,0.12)"
+BRAND = "#009E73"
 
 # Data - Monthly temperature readings over a year
 np.random.seed(42)
 months = np.arange(1, 13)
-# Simulate temperature pattern: warmer in summer, cooler in winter
 base_temp = 15 + 12 * np.sin((months - 4) * np.pi / 6)
 temperature = base_temp + np.random.randn(12) * 1.5
 
 df = pd.DataFrame({"month": months, "temperature": temperature})
 
 # Plot
-plot = (
-    ggplot(df, aes(x="month", y="temperature"))  # noqa: F405
-    + geom_line(color="#306998", size=2)  # noqa: F405
-    + geom_point(color="#306998", size=5, alpha=0.8)  # noqa: F405
-    + labs(  # noqa: F405
-        x="Month", y="Temperature (°C)", title="line-basic · letsplot · pyplots.ai"
-    )
-    + scale_x_continuous(breaks=list(range(1, 13)))  # noqa: F405
-    + ggsize(1600, 900)  # noqa: F405
-    + theme_minimal()  # noqa: F405
-    + theme(  # noqa: F405
-        axis_text=element_text(size=16),  # noqa: F405
-        axis_title=element_text(size=20),  # noqa: F405
-        plot_title=element_text(size=24),  # noqa: F405
-        panel_grid=element_line(color="#CCCCCC", size=0.5, linetype="dashed"),  # noqa: F405
-    )
+anyplot_theme = theme(
+    plot_background=element_rect(fill=PAGE_BG, color=PAGE_BG),
+    panel_background=element_rect(fill=PAGE_BG),
+    panel_grid_major_y=element_line(color=RULE, size=0.5),
+    panel_grid_major_x=element_blank(),
+    panel_grid_minor=element_blank(),
+    axis_title=element_text(color=INK, size=20),
+    axis_text=element_text(color=INK_SOFT, size=16),
+    axis_line=element_line(color=INK_SOFT),
+    plot_title=element_text(color=INK, size=24),
 )
 
-# Save PNG (scale 3x to get 4800 x 2700 px)
-export_ggsave(plot, "plot.png", path=".", scale=3)
+plot = (
+    ggplot(df, aes(x="month", y="temperature"))
+    + geom_line(color=BRAND, size=2)
+    + geom_point(color=BRAND, size=5, alpha=0.9)
+    + labs(x="Month", y="Temperature (°C)", title="line-basic · letsplot · anyplot.ai")
+    + scale_x_continuous(breaks=list(range(1, 13)))
+    + ggsize(1600, 900)
+    + theme_minimal()
+    + anyplot_theme
+)
 
-# Save HTML for interactive version
-export_ggsave(plot, "plot.html", path=".")
+# Save
+ggsave(plot, f"plot-{THEME}.png", path=".", scale=3)
+ggsave(plot, f"plot-{THEME}.html", path=".")