From bc791f283cde8d1038ff95c51e32ca11175e0b07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B1=A4=E7=8E=B2=E7=8E=B2?=
 <2509165008@student.example.com>
Date: Sun, 5 Jul 2026 14:49:30 +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=5F3b?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 q4_3b/zhifang_time.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 q4_3b/zhifang_time.py

diff --git a/q4_3b/zhifang_time.py b/q4_3b/zhifang_time.py
new file mode 100644
index 0000000..3ff0e69
--- /dev/null
+++ b/q4_3b/zhifang_time.py
@@ -0,0 +1,20 @@
+import matplotlib.pyplot as plt
+import json
+duration=[]
+
+with open('movie.json', 'r', encoding='utf-8') as f:
+    data=json.load(f)
+    # print(data)
+    for i in data:
+       duration.append(i["duration"])
+
+plt.figure(figsize=(12,8))
+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
+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')
+plt.show()
+plt.savefig("q4_3b_hist.png",dpi=150,format='png')
\ No newline at end of file