issue_comments

Closing this PR because I shipped the code in it as a separate library instead.

https://github.com/simonw/asyncinject version 0.1a0 is now live on PyPI: https://pypi.org/project/asyncinject/

I'm going to extract out the asyncinject stuff into a separate library.

I made the changes locally and tested them with Python 3.6 like so: cd /tmp mkdir v cd v pipenv shell --python=python3.6 cd ~/Dropbox/Development/datasette pip install -e '.[test]' pytest tests/test_asyncdi.py

E File "/home/runner/work/datasette/datasette/datasette/utils/vendored_graphlib.py", line 56 E if (result := self._node2info.get(node)) is None: E ^ E SyntaxError: invalid syntax Oh no - the vendored code I use has := so doesn't work on Python 3.6! Will have to backport it more thoroughly.

I've decided to make the clever asyncio dependency injection opt-in - so you can either decorate with @inject or you can set inject_all = True on the class - for example: ```python import asyncio from datasette.utils.asyncdi import AsyncBase, inject

class Simple(AsyncBase): def init(self): self.log = []

@inject
async def two(self):
    self.log.append("two")

@inject
async def one(self, two):
    self.log.append("one")
    return self.log

async def not_inject(self, one, two):
    return one + two

class Complex(AsyncBase): inject_all = True

def __init__(self):
    self.log = []

async def b(self):
    self.log.append("b")

async def a(self, b):
    self.log.append("a")

async def go(self, a):
    self.log.append("go")
    return self.log

```