From 50eab9284471a4ad45ddfdc2c15077fe7f47efe7 Mon Sep 17 00:00:00 2001
From: peterbell10 <peterbell10@live.co.uk>
Date: Fri, 23 Jul 2021 00:55:23 +0100
Subject: [PATCH] Fix getattr uses with invalid default values (#88)

---
 CHANGES.md       |  3 +++
 threadpoolctl.py | 12 ++++++++----
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index 161231f3..fab8f653 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,9 @@
 2.3.0 (in development)
 ======================
 
+- Fixed an attribute error when using old versions of OpenBLAS or BLIS that are
+  missing version query functions.
+  https://github.com/joblib/threadpoolctl/pull/88
 
 
 2.2.0 (2021-07-09)
diff --git a/threadpoolctl.py b/threadpoolctl.py
index cc850370..94db2989 100644
--- a/threadpoolctl.py
+++ b/threadpoolctl.py
@@ -640,8 +640,10 @@ class _OpenBLASModule(_Module):
     def get_version(self):
         # None means OpenBLAS is not loaded or version < 0.3.4, since OpenBLAS
         # did not expose its version before that.
-        get_config = getattr(self._dynlib, "openblas_get_config",
-                             lambda: None)
+        get_config = getattr(self._dynlib, "openblas_get_config", None)
+        if get_config is None:
+            return None
+
         get_config.restype = ctypes.c_char_p
         config = get_config().split()
         if config[0] == b"OpenBLAS":
@@ -683,8 +685,10 @@ def get_architecture(self):
 class _BLISModule(_Module):
     """Module class for BLIS"""
     def get_version(self):
-        get_version_ = getattr(self._dynlib, "bli_info_get_version_str",
-                               lambda: None)
+        get_version_ = getattr(self._dynlib, "bli_info_get_version_str", None)
+        if get_version_ is None:
+            return None
+
         get_version_.restype = ctypes.c_char_p
         return get_version_().decode("utf-8")