import gc
import logging


def _init():
    global global_dict
    global_dict = {}


def get_dict():
    return global_dict


def update(_dict):
    # 定义一个全局变量
    try:
        global_dict.update(_dict)
    except Exception as e:
        return


def get(key):
    # 获得一个全局变量
    try:
        value = global_dict.get(key)
    except Exception as e:
        value = None
    return value


def _del():
    global global_dict
    del global_dict
    gc.collect()