From 0e45777104e6da51ca717d1950bd8cbb72657857 Mon Sep 17 00:00:00 2001
From: Jack Feser <feser@csail.mit.edu>
Date: Tue, 11 Jul 2017 14:41:54 -0400
Subject: [PATCH] add get_num_scopes to python solver api

---
 src/api/python/z3/z3.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/api/python/z3/z3.py b/src/api/python/z3/z3.py
index 9a1ebccf6..a16c1b92b 100644
--- a/src/api/python/z3/z3.py
+++ b/src/api/python/z3/z3.py
@@ -6054,6 +6054,24 @@ class Solver(Z3PPObject):
         """
         Z3_solver_pop(self.ctx.ref(), self.solver, num)
 
+    def num_scopes(self):
+        """Return the current number of backtracking points.
+
+        >>> s = Solver()
+        >>> s.num_scopes()
+        0L
+        >>> s.push()
+        >>> s.num_scopes()
+        1L
+        >>> s.push()
+        >>> s.num_scopes()
+        2L
+        >>> s.pop()
+        >>> s.num_scopes()
+        1L
+        """
+        return Z3_solver_get_num_scopes(self.ctx.ref(), self.solver)
+
     def reset(self):
         """Remove all asserted constraints and backtracking points created using `push()`.