import shutil
# 导入sqlite3模块
from sqlite3 import Error
import sqlite3
import os
import time
def run():
while True:
time.sleep(1)
gb = 1024 ** 3 # GB == gigabyte
total_b, used_b, free_b = shutil.disk_usage('/data') # 查看磁盘的使用情况
s = (used_b) / (total_b )
# print(s)
r = s-0.5
print(s,r)
if s > 0.4:
# try-except:防止因连接失败导致程序崩溃
try:
# 数据库文件路径
db_file = '/data/ai_box/config/ai_box.db'
# 连接数据库
conn = sqlite3.connect(db_file)
# 创建游标
cour = conn.cursor()
# 测试是否连接成功
print('连接成功')
# 查询语句sql:select 列名(*-所有列) from 表名 [where 条件]
sql = 'select save_img_path from warning_logs '
# 执行sql语句
cour.execute(sql)
# 打印查询结果
# print()
data = cour.fetchall()
need_del = data[:int(len(data)*(0.02))]
print(need_del)
print(len(need_del))
sql1 = 'delete from warning_logs where save_img_path=?'
cour.executemany(sql1,need_del)
conn.commit()
for i in need_del:
try:
os.remove('/data/ai_box/results/{}'.format(i[0]))
# print(i[0])
except:
continue
# 关闭游标
cour.close()
# 关闭连接
conn.close()
except Error as e:
print('连接失败')
run()
Python实现监控磁盘空间使用量,读取 sqllite数据库,实现同步删除数据库内容与保存的图像数据
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转载自blog.csdn.net/weixin_45755332/article/details/132762573
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