misc: Fix some reprs

Author: JDBetteridge

devito/operations/interpolators.py

@@ -220,6 +220,12 @@ class WeightedInterpolator(GenericInterpolator):
     def __init__(self, sfunction):
         self.sfunction = sfunction
 
+    def __str__(self):
+        return f'{self.__class__.__name__}({self.sfunction})'
+
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.sfunction.name})'
+
     @property
     def grid(self):
         return self.sfunction.grid

devito/tools/abc.py

@@ -38,7 +38,7 @@ def __hash__(self):
         return hash((self.name, self.val))
 
     def __str__(self):
-        ret = self.name if self.val is None else f"{self.name}[{str(self.val)}]"
+        ret = self.name if self.val is None else f"{self.name}({self.val!r})"
         return ret
 
     __repr__ = __str__

devito/types/utils.py

@@ -107,7 +107,7 @@ def __init__(self, suffix=''):
         self.suffix = suffix
 
     def __repr__(self):
-        return f"Layer<{self.suffix}>"
+        return f"HierarchyLayer({self.suffix!r})"
 
     def __eq__(self, other):
         return (isinstance(other, HierarchyLayer) and