pyconject

pyconject is a (highly) opinionated PYthon CONfig inJECTor library inspired by Spring Framework (and Spring Boot Framework).

How to pronounce pyconject

pyconject is pronounced PY-CON-JECT, a word play for Burmese "ပိုက်ကွန်ချက်" = "the art of throwing net". It represents how it can be used to capture all types of configs and inject them into all types of packages.

Usage

For detailed usage, refer to usage.

TL;DR

Instead of this:

# in usr_p/usr_sp/usr_m.py
from black_p.black_sp.black_m import black_func

# initialize values_a, value_b, value_c and value_d.
# this part is often the ugly mess because it involves 
# reading yaml or other tree-like files and assigning values
import yaml
with open("./configs.yml", "rt") as f:
  configs = yaml.safe_load(f)
  black_func_parameters = configs["black_p"]["black_sp"]["black_m"]["black_func"]
  value_a = black_func_parameters["a"]
  # more ugly things here; you get the gist ...

black_func(a=value_a, b=value_b, c=value_c, d=value_d)

With pyconject, we can do this:

# in usr_p/usr_sp/usr_m.py
from black_p.black_sp.black_m import black_func

# pyconject initializes values of a, b, c and d.
from pyconject import pyconject

pyconject.init(globals())

with pyconject.cntx():
    black_func() 

Developing with pyconject

Instead of this:

# in dev_p/dev_sp/dev_m.py
import os

env = os.environ["environment"]

def dev_func(a=None, b=None, c=None, d=None):
  if env == "dev":
    if a is None: a = "dev-a"
    if b is None: b = "dev-b"
    # you know the rest
  elif env == "stg":
    if a is None: a = "stg-a"
    if b is None: b = "stg-b"
    # you know the rest
  elif env == "prd":
    if a is None: a = "prd-a"
    if b is None: b = "prd-b"
    # you know the rest
  # ... 
  # your application logic
  return results

With pyconject, you can do this:

# in dev_p/dev_sp/pyconject-dev_m-dev.py
dev_func:
  a : "dev-a"
  b : "dev_b"
  ...

# in dev_p/dev_sp/dev_m.py
from pyconject import pyconject

@pyconject.func
def dev_func(a, b, c, d):
  # your application logic
  return results

Features

• Developer integration

  • Functions
  • Classes
  • Modules
  • Packages

• Client integration

  • Functions
  • Classes
  • Modules
  • Packages
  • Init (with globals())

• Type of configs

  • yaml -- priority
    • reference other yaml files
  • environment/target selection

To Dos

• Generate config files

• Raw retrieval of resolved configs (to manipulate by user)

• Other types of configs

  • .env
  • override by
    • environment variables
    • commandline arguments

How to contribute

• Create a PR into dev branch.
  • Github actions will run unit-tests.
• Periodically, the package maintainer will PR into main branch.
  • Unit-tests will be run again.
  • When merged, pypi package and github releases will be published.