期末

q4/q4_2/q4_2.py

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+import matplotlib.pyplot as plt
+import json
+movies= json.load(open('movies.json',encoding='utf-8'))
+rating=[]
+durations=[]
+for m in movies:
+    rating.append(m['rating'])
+    durations.append(m['duration'])
+
+plt.figure(figsize=(8,5))
+plt.scatter(durations,rating,color='red',alpha=0.6)
+plt.title("时长与评分关系散点图")
+plt.xlabel('duration')
+plt.ylabel('rating')
+plt.savefig('q4_2_scatter.png',dpi=150)