Use factory strategy.

accountant/__init__.py

@@ -24,25 +24,35 @@ from flask_alembic import alembic_click
 from .models import db
 from .views import api, cors
 
+# pylint: disable=invalid-name
+alembic = Alembic()
+
+
+def create_app(config_path):
+    """Create the app using specific config file."""
     # The app
     app = Flask(__name__, static_folder=None, template_folder=None)
 
-# Configure it from config.cfg.
-app.config.from_pyfile('config.cfg')
+    # Configure it from configuration file.
+    app.config.from_pyfile(config_path)
 
+    # Database related stuff.
     app.config['SQLALCHEMY_ECHO'] = app.debug
     app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
     app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
 
     db.init_app(app)
 
-# Database migrations.
-alembic = Alembic(app)
-
-
-
+    app.config['ALEMBIC'] = {
+        'script_location': 'migrations'
+    }
+    alembic.init_app(app)
 
+    # API views related stuff.
+    cors.init_app(app)
+    api.init_app(app)
 
+    return app
 
 
 # Database initialization.
@@ -62,7 +72,3 @@ def dropdb():
     click.echo("Clearing database.")
     db.metadata.drop_all(bind=db.engine)
     click.echo("Database cleared.")
-
-
-api.init_app(app)
-cors.init_app(app)

accountant/run.py

@@ -0,0 +1,9 @@
+"""Accountant runner."""
+
+from os import path, getcwd
+
+from . import create_app
+
+
+config_path = path.join(getcwd(), 'config.cfg')  # pylint: disable=invalid-name
+app = create_app(config_path)  # pylint: disable=invalid-name