import matplotlib.pyplot as plt
import json
duration=[]

with open(r'D:\桌面\期末考试\simulated-examination\q2_1_crawler\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')


import os
save_path = os.path.join(os.path.dirname(__file__),"q4_3b_hist.png")
plt.savefig(save_path, dpi=150,format='png')
plt.show()