PEP 479: Raising StopIteration from a generator is now an error

So we return instead. Fix needed for Python 3.7.

Fixes https://bitbucket.org/birkenfeld/pygments-main/issues/1457

1 files changed, 2 insertions, 2 deletions

diff --git a/pygments/lexers/lisp.py b/pygments/lexers/lisp.py
index e258c347..258916df 100644
--- a/pygments/lexers/lisp.py
+++ b/pygments/lexers/lisp.py
@@ -2327,13 +2327,13 @@ class ShenLexer(RegexLexer):
             token = Name.Function if token == Literal else token
             yield index, token, value
 
-        raise StopIteration
+        return
 
     def _process_signature(self, tokens):
         for index, token, value in tokens:
             if token == Literal and value == '}':
                 yield index, Punctuation, value
-                raise StopIteration
+                return
             elif token in (Literal, Name.Function):
                 token = Name.Variable if value.istitle() else Keyword.Type
             yield index, token, value