From ea1103f040c0df65c6cff7b29fe4e325243cd63b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9E=97=E4=BC=9F=E6=B3=B0?=
 <2509165006@student.example.com>
Date: Mon, 6 Jul 2026 14:24:41 +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=5F3b?=
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---
 q4/q4_3b/q4_3b.py | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 q4/q4_3b/q4_3b.py

diff --git a/q4/q4_3b/q4_3b.py b/q4/q4_3b/q4_3b.py
new file mode 100644
index 0000000..948a7be
--- /dev/null
+++ b/q4/q4_3b/q4_3b.py
@@ -0,0 +1,35 @@
+# 全部导入放最上方
+import matplotlib.pyplot as plt
+import json
+import os
+
+duration = []
+
+# 读取json文件
+with open(r'C:\Users\34481\OneDrive\Desktop\作业\新建文件夹\simulated-examination\q4\q4_3b\movies.json', 'r', encoding='utf-8') as f:
+    data = json.load(f)
+
+# 提取时长数据
+for i in data:
+    duration.append(i["duration"])
+
+# 创建画布
+plt.figure(figsize=(12, 8))
+
+# 修正hist参数分行语法，绘图参数完全不变，图形一致
+plt.hist(
+    duration,        # 数据
+    bins=10,         # 分成几个柱子
+    color='#3498DB', # 颜色
+    edgecolor='white'# 柱子边框颜色
+)
+
+# 图表文字设置（完全保留原参数）
+plt.title('时长分布', fontsize=14)
+plt.xlabel('时长（分钟）', fontsize=13)
+plt.grid(True, linestyle='--', alpha=0.5, axis='y')
+
+# 保存图片逻辑不变
+save_path = os.path.join(os.path.dirname(__file__), "q4_3b_hist.png")
+plt.savefig(save_path, dpi=150, format='png')
+plt.show()
\ No newline at end of file