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lastlegion/di_3.py

Created September 1, 2020 00:03
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di_3.py
import pinject
import os
class Repository:
def __init__(self, db: str):
self.db = db
def get_data(self):
return 'Hello World'
class RepositoryBindingSpec(pinject.BindingSpec):
def provide_repository(self):
return Repository(db=os.getenv('dbname'))
class Service:
def __init__(self, repository: Repository):
self.repository = repository
def process(self):
return self.repository.get_data()
class UI:
def __init__(self, service: Service):
self.service = service
def render(self):
print(self.service.process())
if __name__ == '__main__':
object_graph = pinject.new_object_graph(binding_specs=[RepositoryBindingSpec()])
ui = object_graph.provide(UI)
ui.render()
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