def set_settings(ctx, instance=None):
"""Pick correct settings instance and set it to a global variable."""
global settings
settings = None
if instance is not None:
if ctx.invoked_subcommand in ["init"]:
raise click.UsageError(
"-i/--instance option is not allowed for `init` command")
sys.path.insert(0, ".")
settings = import_settings(instance)
elif "FLASK_APP" in os.environ: # pragma: no cover
with suppress(ImportError, click.UsageError):
from flask.cli import ScriptInfo # noqa
from dynaconf import FlaskDynaconf
flask_app = ScriptInfo().load_app()
settings = FlaskDynaconf(flask_app, **flask_app.config).settings
click.echo(
click.style("Flask app detected",
fg="white",
bg="bright_black"))
elif "DJANGO_SETTINGS_MODULE" in os.environ: # pragma: no cover
sys.path.insert(0, os.path.abspath(os.getcwd()))
try:
# Django extension v2
from django.conf import settings # noqa
settings.DYNACONF.configure()
except AttributeError:
settings = LazySettings()
if settings is not None:
click.echo(
click.style("Django app detected",
fg="white",
bg="bright_black"))
if settings is None:
if instance is None and "--help" not in click.get_os_args():
if ctx.invoked_subcommand and ctx.invoked_subcommand not in [
"init",
]:
warnings.warn(
"Starting on 3.x the param --instance/-i is now required. "
"try passing it `dynaconf -i path.to.settings <cmd>` "
"Example `dynaconf -i config.settings list` ")
settings = legacy_settings
else:
settings = LazySettings(create_new_settings=True)
else:
settings = LazySettings()
def import_settings(dotted_path):
"""Import settings instance from python dotted path.
Last item in dotted path must be settings instace.
Example: import_settings('path.to.settings')
"""
if "." in dotted_path:
module, name = dotted_path.rsplit(".", 1)
else:
raise click.UsageError(
f"invalid path to settings instance: {dotted_path}")
try:
module = importlib.import_module(module)
except ImportError as e:
raise click.UsageError(e)
try:
return getattr(module, name)
except AttributeError as e:
raise click.UsageError(e)