# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1548350895 -3600
# Node ID d3a602461439eab5d14d27485bc1df18a92b1815
# Parent  6538a119a67f51f3d70b1d88a124bccad4096c76
Permit Raise instantiation using a single argument.

diff -r 6538a119a67f -r d3a602461439 compiler/ast.py
--- a/compiler/ast.py	Thu Jan 24 17:39:40 2019 +0100
+++ b/compiler/ast.py	Thu Jan 24 18:28:15 2019 +0100
@@ -1249,7 +1249,7 @@
         return "print %s" % ", ".join(map(str, dest + self.nodes))
 
 class Raise(Node):
-    def __init__(self, expr1, expr2, expr3, lineno=None):
+    def __init__(self, expr1, expr2=None, expr3=None, lineno=None):
         self.expr1 = expr1
         self.expr2 = expr2
         self.expr3 = expr3