diff --git a/loopy/frontend/fortran/tree.py b/loopy/frontend/fortran/tree.py
index b1df6e3d01317a315354cf10a55b9312090dc61f..6939bb6ad8727b3e9f11966285b6a22de84bb032 100644
--- a/loopy/frontend/fortran/tree.py
+++ b/loopy/frontend/fortran/tree.py
@@ -53,7 +53,7 @@ class FTreeWalkerBase(object):
 
     ENTITY_RE = re.compile(
             r"^(?P<name>[_0-9a-zA-Z]+)"
-            "(\((?P<shape>[-+*0-9:a-zA-Z, \t]+)\))?$")
+            r"(\((?P<shape>[-+*0-9:a-zA-Z, \t]+)\))?$")
 
     def parse_dimension_specs(self, node, dim_decls):
         def parse_bounds(bounds_str):
diff --git a/loopy/symbolic.py b/loopy/symbolic.py
index 8927cd6fba97d847e425fe9b2eaa8960297cdb76..f4d46854b8dd15c8c1e9a716017ce2724b4db2fc 100644
--- a/loopy/symbolic.py
+++ b/loopy/symbolic.py
@@ -1629,7 +1629,7 @@ def get_access_range(domain, subscript, assumptions, shape=None,
             if shape is not None:
                 try:
                     shape_aff = guarded_aff_from_expr(access_map.space, shape[idim])
-                except ExpressionToAffineConversionError as sub_err:
+                except ExpressionToAffineConversionError:
                     pass
 
             if shape_aff is None:
diff --git a/setup.cfg b/setup.cfg
index b939ce0cf8b680bb1eb3501ed6d7f563e9c1c7b6..eec3dfd1f52ed97c58f5281716eac8fc18980094 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [flake8]
-ignore = E126,E127,E128,E123,E226,E241,E242,E265,N802,W503,E402,N814
+ignore = E126,E127,E128,E123,E226,E241,E242,E265,N802,W503,E402,N814,W504
 max-line-length=85
 exclude=
     loopy/target/c/compyte/ndarray,