feat(article): 添加四篇AI行业深度分析文章

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2026-04-19 09:37:35 +08:00
parent 66538592c8
commit 09570aec99
14 changed files with 1376 additions and 0 deletions
@@ -0,0 +1,75 @@
+import matplotlib.pyplot as plt
+import matplotlib.dates as mdates
+from datetime import datetime
+
+plt.rcParams['font.sans-serif'] = ['PingFang SC', 'Hiragino Sans GB', 'Arial Unicode MS', 'STHeiti']
+plt.rcParams['axes.unicode_minus'] = False
+
+dates = [
+    datetime(2020, 4, 1),
+    datetime(2020, 10, 1),
+    datetime(2021, 2, 12),
+    datetime(2021, 8, 1),
+    datetime(2022, 1, 1),
+    datetime(2022, 6, 1),
+    datetime(2023, 5, 1),
+    datetime(2023, 5, 2),
+    datetime(2023, 10, 1),
+    datetime(2024, 3, 1),
+    datetime(2024, 9, 1),
+    datetime(2025, 3, 1),
+    datetime(2025, 10, 27),
+    datetime(2026, 4, 19),
+]
+prices = [40, 65, 113.51, 60, 35, 17, 17.5, 9, 10, 5, 2.5, 1.8, 1.2, 0.61]
+
+fig, ax = plt.subplots(figsize=(12, 6.5), facecolor='#0d1117')
+ax.set_facecolor('#0d1117')
+
+ax.plot(dates, prices, color='#ff4d4d', linewidth=2.8, zorder=3)
+ax.fill_between(dates, prices, color='#ff4d4d', alpha=0.18, zorder=2)
+
+events = [
+    (datetime(2021, 2, 12), 113.51, '2021-02\n历史高点 $113.51', (180, 8), 'bottom', 'left'),
+    (datetime(2023, 5, 2), 9, '2023-05  ChatGPT 冲击\n财报日单日跌 48%', (180, 25), 'bottom', 'left'),
+    (datetime(2025, 10, 27), 1.2, '2025-10  二轮裁员 -45%', (-60, 35), 'bottom', 'right'),
+    (datetime(2026, 4, 19), 0.61, '2026-04  $0.61\n累计跌 99%', (-20, 55), 'bottom', 'right'),
+]
+for dt, p, label, offset_days, va, ha in events:
+    from datetime import timedelta
+    xtext = dt + timedelta(days=offset_days[0])
+    ytext = p + offset_days[1]
+    ax.annotate(
+        label,
+        xy=(dt, p),
+        xytext=(xtext, ytext),
+        color='#ffd166',
+        fontsize=10,
+        ha=ha,
+        va=va,
+        fontweight='bold',
+        arrowprops=dict(arrowstyle='->', color='#ffd166', lw=1.2),
+    )
+    ax.scatter([dt], [p], color='#ffd166', s=55, zorder=4, edgecolors='#ff4d4d', linewidth=1.5)
+
+ax.set_title('Chegg (CHGG) 股价 5 年雪崩：$113.51 → $0.61  (-99%)',
+             color='white', fontsize=17, pad=20, fontweight='bold')
+ax.set_ylabel('股价 (USD)', color='#c9d1d9', fontsize=12)
+ax.set_xlabel('', color='#c9d1d9')
+ax.tick_params(colors='#c9d1d9', labelsize=11)
+
+for spine in ax.spines.values():
+    spine.set_color('#30363d')
+
+ax.grid(True, alpha=0.25, color='#30363d', linestyle='--')
+ax.xaxis.set_major_locator(mdates.YearLocator())
+ax.xaxis.set_major_formatter(mdates.DateFormatter('%Y'))
+ax.set_ylim(-5, 140)
+
+fig.text(0.5, 0.01, '数据来源：Yahoo Finance / Macrotrends',
+         color='#6e7681', fontsize=8, ha='center', va='bottom', style='italic')
+
+plt.tight_layout()
+plt.savefig('/Users/bing/work/code/myself/self-media-james/articles/013/chegg-stock.png',
+            dpi=150, facecolor='#0d1117', bbox_inches='tight')
+print('Chegg chart saved')