安装依赖：pip install watchdog
#!/usr/bin/env python3
# -*- coding: utf-8 -*- import logging
import os
import threading
from configparser import ConfigParser, NoOptionError
from watchdog.events import FileSystemEventHandler
from watchdog.observers import Observer lock = threading.Lock() class ConfigFileModifyHandler(FileSystemEventHandler):
def on_modified(self, event):
if os.path.relpath(event.src_path) == 'app.config':
Config.get_instance().load_config() class Config(object):
__instance = None def __init__(self, config_file_path=None):
logging.debug('配置初始化')
self.config = ConfigParser()
self.config_file_path = config_file_path or os.path.join(os.path.dirname(__file__), '../app.config')
self.load_config()
self._init_config_file_observer() def _init_config_file_observer(self):
logging.debug('配置文件监控')
event_handler = ConfigFileModifyHandler()
observer = Observer()
observer.schedule(event_handler, path=os.path.dirname(self.config_file_path), recursive=False)
observer.setDaemon(True)
observer.start() @staticmethod
def get_instance():
if Config.__instance:
return Config.__instance
try:
lock.acquire()
if not Config.__instance:
Config.__instance = Config()
finally:
lock.release()
return Config.__instance def load_config(self):
logging.debug('加载配置')
self.config.read(self.config_file_path, 'utf-8') def get(self, key, default=None):
"""
获取配置
:param str key: 格式 [section].[key] 如：app.name
:param Any default: 默认值
:return:
"""
map_key = key.split('.')
if len(map_key) < 2:
return default
section = map_key[0]
if not self.config.has_section(section):
return default
option = '.'.join(map_key[1:])
try:
return self.config.get(section, option)
except NoOptionError:
return default def get(key, default=None):
"""
获取配置
:param str key: 格式 [section].[key] 如：app.name
:param Any default: 默认值
:return:
"""
return Config.get_instance().get(key, default)