{"spec_id":"venn-basic","library":"matplotlib","language":"python","code":"\"\"\" anyplot.ai\nvenn-basic: Venn Diagram\nLibrary: matplotlib 3.10.9 | Python 3.13.13\nQuality: 92/100 | Updated: 2026-05-11\n\"\"\"\n\nimport os\nimport matplotlib.pyplot as plt\nfrom matplotlib_venn import venn3\n\n# Theme tokens\nTHEME = os.getenv(\"ANYPLOT_THEME\", \"light\")\nPAGE_BG = \"#FAF8F1\" if THEME == \"light\" else \"#1A1A17\"\nELEVATED_BG = \"#FFFDF6\" if THEME == \"light\" else \"#242420\"\nINK = \"#1A1A17\" if THEME == \"light\" else \"#F0EFE8\"\nINK_SOFT = \"#4A4A44\" if THEME == \"light\" else \"#B8B7B0\"\n\n# Okabe-Ito palette\nIMPRINT = [\"#009E73\", \"#C475FD\", \"#4467A3\"]\n\n# Data: Developer survey - programming language proficiency\n# venn3 expects: (Abc, aBc, ABc, abC, AbC, aBC, ABC)\nonly_a = 40  # Only Python\nonly_b = 25  # Only JavaScript\na_and_b = 20  # Python + JavaScript (not SQL)\nonly_c = 15  # Only SQL\na_and_c = 10  # Python + SQL (not JavaScript)\nb_and_c = 15  # JavaScript + SQL (not Python)\na_and_b_and_c = 10  # All three\n\n# Plot\nfig, ax = plt.subplots(figsize=(16, 9), facecolor=PAGE_BG)\nax.set_facecolor(PAGE_BG)\n\n# Create Venn diagram with subset sizes\nvenn = venn3(\n    subsets=(only_a, only_b, a_and_b, only_c, a_and_c, b_and_c, a_and_b_and_c),\n    set_labels=(\"Python\", \"JavaScript\", \"SQL\"),\n    ax=ax,\n    alpha=0.6,\n    set_colors=IMPRINT,\n)\n\n# Style circle labels (set names)\nfor text in venn.set_labels:\n    if text:\n        text.set_fontsize(24)\n        text.set_fontweight(\"bold\")\n        text.set_color(INK)\n\n# Style subset labels (numbers in regions)\nfor text in venn.subset_labels:\n    if text:\n        text.set_fontsize(20)\n        text.set_fontweight(\"bold\")\n        text.set_color(INK)\n\nax.set_title(\n    \"venn-basic · matplotlib · anyplot.ai\",\n    fontsize=24,\n    fontweight=\"medium\",\n    color=INK,\n    pad=20,\n)\n\nplt.tight_layout()\nplt.savefig(f\"plot-{THEME}.png\", dpi=300, bbox_inches=\"tight\", facecolor=PAGE_BG)\n"}