From 476a566f73080d67b9aa9d072caccbc8a1a3182d Mon Sep 17 00:00:00 2001
From: Jeff Reback <jeff@reback.net>
Date: Thu, 1 Apr 2021 18:45:49 -0400
Subject: [PATCH] Revert "PERF: numexpr doesn't support floordiv, so don't try
 (#40727)"

This reverts commit e6f7e7b20ebb1512d6debee5e8592b0b5351ac49.
---
 pandas/core/computation/expressions.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pandas/core/computation/expressions.py b/pandas/core/computation/expressions.py
index 43b6a6fb64314..8205534c9d48b 100644
--- a/pandas/core/computation/expressions.py
+++ b/pandas/core/computation/expressions.py
@@ -128,9 +128,8 @@ def _evaluate_numexpr(op, op_str, a, b):
     roperator.rsub: "-",
     operator.truediv: "/",
     roperator.rtruediv: "/",
-    # floordiv not supported by numexpr 2.x
-    operator.floordiv: None,
-    roperator.rfloordiv: None,
+    operator.floordiv: "//",
+    roperator.rfloordiv: "//",
     # we require Python semantics for mod of negative for backwards compatibility
     # see https://github.com/pydata/numexpr/issues/365
     # so sticking with unaccelerated for now