handle create pattern when expr is not an Expression/Atom

Mathics3 · Nov 16, 2022 · 21edeea · 21edeea
1 parent c8cbe50
commit 21edeea
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/mathics/core/pattern.py b/mathics/core/pattern.py
@@ -83,6 +83,8 @@ def create(expr: BaseElement) -> "Pattern":
         Otherwise, if ``expr`` is an ``Atom``, create and return  ``AtomPattern`` for ``expr``.
         Otherwise, create and return and ``ExpressionPattern`` for ``expr``.
         """
+        if not isinstance(expr, (Atom, Expression)):
+            expr = expr.to_expression()
 
         name = expr.get_head_name()
         pattern_object = pattern_objects.get(name)