Use a selector instead of polling Python interpreter

1 files changed, 5 insertions, 1 deletions

diff --git a/python/runner/interpreter.py b/python/runner/interpreter.py
index 5d8dc09..da60d72 100755
--- a/python/runner/interpreter.py
+++ b/python/runner/interpreter.py
@@ -71,6 +71,8 @@ class MyConsole(code.InteractiveConsole):
                 prompt = '>>> '
                 buffer = []
                 self.write('\n')
+            except ValueError:
+                break
             except EOFError:
                 break
 
@@ -78,10 +80,12 @@ class MyConsole(code.InteractiveConsole):
         try:
             exec(code, self.locals)
         except KeyboardInterrupt:
-            # Don't show traceback on SIGINT.
             self.write('^C')
             raise
+        except SystemExit as ex:
+            raise
         except:
+            # Show traceback for all other exceptions.
             self.showtraceback()
 
 MyConsole().interact()