cleanups

cwltool/docker.py

@@ -251,7 +251,11 @@ def append_volume(
         runtime: List[str], source: str, target: str, writable: bool = False
     ) -> None:
         """Add binding arguments to the runtime list."""
-        if os.path.isfile(source) and target.endswith(os.path.basename(source)) and not writable:
+        if (
+            os.path.isfile(source)
+            and target.endswith(os.path.basename(source))
+            and not writable
+        ):
             source = os.path.dirname(source)
             target = os.path.dirname(target)
         options = [

cwltool/singularity.py

@@ -280,12 +280,16 @@ def get_from_requirements(
 
     @staticmethod
     def append_volume(
-            runtime: List[str], source: str, target: str, writable: bool = False
+        runtime: List[str], source: str, target: str, writable: bool = False
     ) -> None:
         src = docker_windows_path_adjust(source)
         dst = docker_windows_path_adjust(target)
         writable = "rw" if writable else "ro"
-        if os.path.isfile(src) and dst.endswith(os.path.basename(src)) and writable == 'ro':
+        if (
+            os.path.isfile(src)
+            and dst.endswith(os.path.basename(src))
+            and writable == "ro"
+        ):
             src = os.path.dirname(src)
             dst = os.path.dirname(dst)
         bind_arg = f"--bind={src}:{dst}:{writable}"
@@ -404,7 +408,8 @@ def create_runtime(
                 )
             )
         else:
-            runtime.append("--bind={}:{}:rw".format(
+            runtime.append(
+                "--bind={}:{}:rw".format(
                     docker_windows_path_adjust(os.path.realpath(self.outdir)),
                     self.builder.outdir,
                 )