Py 3 handles exception propagation a little differently?

2021-12-23 19:09:07 -08:00 · 2021-12-23 19:09:07 -08:00 · c6b46e5f01
parent 2cc0ea0548
commit c6b46e5f01
1 changed files with 3 additions and 4 deletions
--- a/joy/joy.py
+++ b/joy/joy.py
@ -61,11 +61,10 @@ def joy(stack, expression, dictionary, viewer=None):

        term, expression = expression
        if isinstance(term, Symbol):
-            try:
-                term = dictionary[term]
-            except KeyError:
+            if term not in dictionary:
                raise UnknownSymbolError(term)
-            stack, expression, dictionary = term(stack, expression, dictionary)
+            func = dictionary[term]
+            stack, expression, dictionary = func(stack, expression, dictionary)
        else:
            stack = term, stack