ferruzzi commented on code in PR #22862:
URL: https://github.com/apache/airflow/pull/22862#discussion_r846285920
##########
airflow/__init__.py:
##########
@@ -54,18 +54,31 @@
PY39 = sys.version_info >= (3, 9)
PY310 = sys.version_info >= (3, 10)
+# Things to lazy import in form 'name': 'path.to.module'
+__lazy_imports = {
+ 'DAG': 'airflow.models.dag',
+ 'XComArg': 'airflow.models.xcom_arg',
+ 'AirflowException': 'airflow.exceptions',
+}
+
def __getattr__(name):
# PEP-562: Lazy loaded attributes on python modules
- if name == "DAG":
- from airflow.models.dag import DAG
+ path = __lazy_imports.get(name)
+ if not path:
+ raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+ import operator
- return DAG
- if name == "AirflowException":
- from airflow.exceptions import AirflowException
+ # Strip of the "airflow." prefix because of how `__import__` works (it
always returns the top level
Review Comment:
```suggestion
# Strip off the "airflow." prefix because of how `__import__` works (it
always returns the top level
```
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