Fix ruff

ufl/algorithms/formsplitter.py

@@ -94,8 +94,9 @@ def restricted(self, o):
     expr = MultiFunction.reuse_if_untouched
 
 
-def extract_blocks(form, i: Optional[int] = None, j: Optional[int] = None,
-                   arity: Optional[int] = None):
+def extract_blocks(
+    form, i: Optional[int] = None, j: Optional[int] = None, arity: Optional[int] = None
+):
     """Extract blocks of a form.
 
     If arity is 0, returns the form.
@@ -117,8 +118,8 @@ def extract_blocks(form, i: Optional[int] = None, j: Optional[int] = None,
     arguments = form.arguments()
 
     if arity is None:
-      numbers = tuple(sorted(set(a.number() for a in arguments)))
-      arity = len(numbers)
+        numbers = tuple(sorted(set(a.number() for a in arguments)))
+        arity = len(numbers)
 
     assert arity <= 2
     if arity == 0:

ufl/algorithms/formtransformations.py

@@ -362,9 +362,9 @@ def compute_form_lhs(form):
     form_blocks = extract_blocks(form, arity=2)
     lhs = 0
     for bi in form_blocks:
-      for bj in bi:
-        if bj is not None:
-          lhs += compute_form_with_arity(bj, 2)
+        for bj in bi:
+            if bj is not None:
+                lhs += compute_form_with_arity(bj, 2)
     return lhs
 
 
@@ -378,7 +378,7 @@ def compute_form_rhs(form):
     form_blocks = extract_blocks(form, arity=1)
     rhs = 0
     for bi in form_blocks:
-      rhs += compute_form_with_arity(bi, 1)
+        rhs += compute_form_with_arity(bi, 1)
     return -rhs