3

q4/q4_3b/q4_3b.py

@@ -0,0 +1,16 @@
+import json
+import matplotlib.pyplot as plt
+
+plt.rcParams['font.sans-serif'] = ['SimHei']
+plt.rcParams['axes.unicode_minus'] = False
+
+with open('simulated-examination/q2_1_crawler/movies.json', 'r', encoding='utf-8') as f:
+    movies = json.load(f)
+
+durations = [m['duration'] for m in movies]
+
+plt.figure()
+plt.hist(durations, bins=5, color='green')
+plt.title("时长分布")
+plt.xlabel("时长（分钟）")
+plt.savefig('q4_3b_hist.png', dpi=150)