@cached_propertydefdata(self):print('开始计算数据')return10*10obj = DataSet()print(obj.data)# 输出:开始计算数据100print(obj.data)# 输出:100
38. 缓存属性 (cached_property) 是一个非常常用的功能,很多知名 Python 项目都自己实现过它,现在终于进入版本库了。
问“Python3”无法导入名称“cached_property”ENFastDFS依赖无法导入 fastdfs-client-java 导入爆红 <!
'__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__'] print(dir([])) #获得列表的方法 #输出 ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '...
python3-cached-property Provides cached-property for decorating methods in classes (Python 3) python3-defusedxml XML bomb protection for Python stdlib modules (for Python 3) python3-freezegun Python3 library to mock the datetime module in unit testing ...
ImportError: cannot import name 'cached_property' from 'werkzeug' 2. 编写api接口 2.1创建api 这段代码在apis文件夹下的__init__.py编写 init.py # -*- coding: utf-8 -*-"""@ auth : carl_DJ@ time : 2020-9-09"""from flask_restplus import Apifrom PaperWeb.Services import app#创建apiapi...
lst_1= [1, 2, 3]print(dir())#输出 ['__annotations__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'lst_1', 'update_func']classShape:def__dir__(self):return['area','perimeter','location']...
支持所有常用字典方法。另外还有一个 maps 属性(attribute),一个创建子上下文的方法(method), 一个存取它们首个映射的属性(property): maps 一个可以更新的映射列表。这个列表是按照第一次搜索到最后一次搜索的顺序组织的。它是仅有的存储状态,可以被修改。列表最少包含一个映射。
pip install --force pip==20.2.4 wheel setuptools cached-property six pip install --upgrade --no-dependencies --force numpy-1.18.5-cp38-cp38-macosx_11_0_arm64.whl grpcio-1.33.2-cp38-cp38-macosx_11_0_arm64.whl h5py-2.10.0-cp38-cp38-macosx_11_0_arm64.whl tensorflow_addons-0.11.2+ml...
For example, small integers and short strings are cached; these caches would have to be moved to the interpreter state. Other object types have their own free list; these free lists would have to be moved to the interpreter state. And so on....