期末

q4/q4_3a/q4-3a.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.title("评分分布")        
+plt.xlabel("评分")    
+plt.figure(figsize=(8,5))
+plt.hist(rating,bins=5,color='blue')
+plt.savefig('q4_3a_hist.png',dpi=150)
+