grainsv2 11.10

安装

pip install grainsv2

开发安装

克隆grainsrepo并使用pip安装：

执行

安装之后，现在应该可以使用grains命令。在

命令在垂直扩展之前没有输出（详细信息如下）。在

测试

安装要求-测试.txt使用pip并运行pytest：

pip install -r grains/requirements-test.txt
pytest grains/tests

垂直应用程序合并

延伸晶粒说明

安装pop：

pip install --upgrade pop

为项目创建新目录：

mkdir grains_{project_name}
cd grains_{project_name}

使用pop seed生成扩展粒度的项目结构：

pop-seed -t v grains_{project_name} -d grains

• “-t v”指定这是一个垂直应用程序合并的项目
• “-d grains”表示要实现“grains”的动态名称

请注意，已经为您创建了一些结构。 我们特别关注grains{project_name}/grains中的新目录

添加“谷物”到要求.txt公司名称：

echo "grains" >> requirements.txt

造粒

• Create a new file in “grains_{project_name}/grains”

  • The directory should already have been created by pop-seed.
  • The file name is arbitrary.
  • Every file in this directory, then it’s subdirectories, will be parsed “simultaneously” (as far as that makes sense for asyncio).
  • Grains that are dependant on each other should be assigned in the same function.
  • Do NOT rely on the collector’s recursion strategy for grains to depend on each other.
  • Use hub.grains.init.wait_for(“grains”) to wait for grains to be generated by another sub

• Add your new project to the python path

  • alternatively, run “pip install -e .” from your project’s root directory

    • you only need to do this once

• Create an async function in this file with a descriptive yet arbitrary name

  • By convention it should start with “load”
  • Make it async unless you have a really really really good reason.
  • Grains that depend on each other already belong in the same function, don’t depend on synchronous programming for determinism
  • Use hub.grains.init.wait_for(“specific_grain”) to explicitly wait for an external grain to become available before moving on
  • Grains can be accessed and assigned like a dictionary, but our convention is to use the namespace
  • Use hub.grains.GRAINS._dict() or copy.copy(hub.grains.GRAINS) to retrieve a JSON serializable version of grains.

示例：

async def load_my_grain(hub):
    hub.grains.GRAINS.new_grain = "Hello World!"

就这样！现在，请验证是否已从命令行收集颗粒：

grains new_grain

输出：

new_grain:
    Hello World!