From da315b26882337fc8b492fb17a4452bca6be7b6a Mon Sep 17 00:00:00 2001
From: Vitor Santos Costa <vsc@dcc.fc.up.pt>
Date: Tue, 5 Apr 2016 08:18:50 +0100
Subject: [PATCH] missing

---
 packages/swig/python/yapy.py | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 packages/swig/python/yapy.py

diff --git a/packages/swig/python/yapy.py b/packages/swig/python/yapy.py
new file mode 100644
index 000000000..829a38aa6
--- /dev/null
+++ b/packages/swig/python/yapy.py
@@ -0,0 +1,33 @@
+# python commands
+
+import sys
+import yap
+
+#
+# initialize engine
+engine = yap.YAPEngine();
+# engine = yap.YAPEngine(yap.YAPParams());
+
+def query( s ):
+    q = engine.query(s)
+    while q.next():
+        vs = q.namedVars()
+        if vs.length() == 0:
+            print( "yes" )
+            return
+        else:
+            while vs.length() > 0:
+                eq = vs.car()
+                print( eq.getArg(1).text() + " = " + eq.getArg(2).text() )
+                vs = vs.cdr()
+            s = raw_input("next: ?")
+            if s.find(';') != 0 :
+                return
+    print( "no more answers" )
+    return
+
+def live():
+    loop = True
+    while loop:
+        s = raw_input("?- ")
+        query( s )