From dd7f4bf2230d494ec7adf6ae21a83dd769997307 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8E=AB=E5=A2=9E?= <2509165014@student.example.com>
Date: Sun, 5 Jul 2026 18:18:04 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20q4/q4=5F2?=
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---
 q4/q4_2/q4_2.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 q4/q4_2/q4_2.py

diff --git a/q4/q4_2/q4_2.py b/q4/q4_2/q4_2.py
new file mode 100644
index 0000000..ec9d996
--- /dev/null
+++ b/q4/q4_2/q4_2.py
@@ -0,0 +1,17 @@
+import json
+import matplotlib.pyplot as plt
+
+movies = json.load(open('movies.json', encoding='utf-8'))['movies']
+# print(movies)
+ratings = []
+durations = []
+for m in movies:
+    ratings.append(m['rating'])
+    durations.append(m['duration'])
+
+plt.figure(figsize=(8,5))
+plt.scatter(durations,ratings,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)
\ No newline at end of file