Fix lint issues.

Author: sameeul

cwltool/singularity.py

@@ -74,15 +74,15 @@ def is_apptainer_1_or_newer() -> bool:
         return False
     return v[0][0] >= 1
 
+
 def is_apptainer_1_1_or_newer() -> bool:
-    """
-    Check if apptainer singularity distribution is version 1.1 or higher.
-    """
+    """Check if apptainer singularity distribution is version 1.1 or higher."""
     v = get_version()
     if v[1] != "apptainer":
         return False
     return v[0][0] >= 2 or (v[0][0] >= 1 and v[0][1] >= 1)
 
+
 def is_version_2_6() -> bool:
     """
     Check if this singularity version is exactly version 2.6.
@@ -126,11 +126,13 @@ def is_version_3_9_or_newer() -> bool:
     v = get_version()
     return v[0][0] >= 4 or (v[0][0] == 3 and v[0][1] >= 9)
 
+
 def is_version_3_10_or_newer() -> bool:
     """Detect if Singularity v3.10+ is available."""
     v = get_version()
     return v[0][0] >= 4 or (v[0][0] == 3 and v[0][1] >= 10)
 
+
 def _normalize_image_id(string: str) -> str:
     return string.replace("/", "_") + ".img"
 
@@ -479,7 +481,7 @@ def create_runtime(
         singularity_exec_command = "exec"
         if is_apptainer_1_1_or_newer() or is_version_3_10_or_newer():
             singularity_exec_command = "run --no-eval"
-        
+
         runtime = [
             "singularity",
             "--quiet",