From 9d3ed5635dbe08e9b43cf75e5afac1b6064fc67d Mon Sep 17 00:00:00 2001
From: Matt Roeschke <mroeschke@housecanary.com>
Date: Mon, 20 Apr 2020 14:35:47 -0700
Subject: [PATCH] Use numba.extending.is_jitted for numba version > 0.50

---
 pandas/core/util/numba_.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pandas/core/util/numba_.py b/pandas/core/util/numba_.py
index af24189adbc27..29e74747881ae 100644
--- a/pandas/core/util/numba_.py
+++ b/pandas/core/util/numba_.py
@@ -1,4 +1,5 @@
 """Common utilities for Numba operations"""
+from distutils.version import LooseVersion
 import inspect
 import types
 from typing import Callable, Dict, Optional, Tuple
@@ -90,7 +91,12 @@ def jit_user_function(
     """
     numba = import_optional_dependency("numba")
 
-    if isinstance(func, numba.targets.registry.CPUDispatcher):
+    if LooseVersion(numba.__version__) >= LooseVersion("0.49.0"):
+        is_jitted = numba.extending.is_jitted(func)
+    else:
+        is_jitted = isinstance(func, numba.targets.registry.CPUDispatcher)
+
+    if is_jitted:
         # Don't jit a user passed jitted function
         numba_func = func
     else: