Some type annotation work:

For static checking: tell mypy to ignore missing imports - specifically Client
when the globus compute SDK is not installed.

For dynamic type annotations: tell Python to use deferred type resolution.
This lets the module be imported even though the Client type annotation does
not exist in some setups.

mypy.ini

@@ -177,6 +177,9 @@ ignore_missing_imports = True
 #[mypy-multiprocessing.synchronization.*]
 #ignore_missing_imports = True
 
+[mypy-globus_compute_sdk.*]
+ignore_missing_imports = True
+
 [mypy-pandas.*]
 ignore_missing_imports = True
 

parsl/executors/globus_compute.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import uuid
 from concurrent.futures import Future
 from typing import Any, Callable, Dict, Optional, Union
@@ -11,7 +13,6 @@
     _globus_compute_enabled = True
 except ImportError:
     _globus_compute_enabled = False
-    Client: Any  # type: ignore[no-redef]
 
 UUID_LIKE_T = Union[uuid.UUID, str]