import matplotlib
import matplotlib.pyplot as plt

months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
revenue = [62, 68, 71, 86, 91, 88]
x = list(range(1, len(months) + 1))

fig, ax = plt.subplots(figsize=(6, 3.5), layout="constrained")
ax.plot(x, revenue, marker="o", linewidth=2.5, color="#2563eb")
ax.set_xticks(x, months)
ax.set_ylabel("Revenue (USD thousands)")
ax.set_title("Quarterly campaign revenue")
ax.grid(True, axis="y", color="#e5e7eb")
ax.set_ylim(55, 100)

annotation = ax.annotate(
    "Peak month\n91k",
    xy=(5, 91),
    xytext=(32, 26),
    textcoords="offset points",
    arrowprops={"arrowstyle": "->", "color": "#1f2937", "linewidth": 1.3},
    bbox={"boxstyle": "round,pad=0.3", "fc": "#fef3c7", "ec": "#92400e"},
    ha="left",
    va="bottom",
)

fig.savefig("annotation-add.png", dpi=160)

print(f"matplotlib {matplotlib.__version__}")
print(f"annotation text: {annotation.get_text().replace(chr(10), ' / ')}")
print(f"annotation xy data: {annotation.xy}")
print(f"text offset points: {annotation.get_position()}")
print("saved annotation-add.png")