From fb0c43c4b7b3bafb384ff7bc8a31a46e28996c83 Mon Sep 17 00:00:00 2001
From: Alex Rogozhnikov <iamfullofspam@gmail.com>
Date: Sun, 17 Sep 2023 22:58:19 -0700
Subject: [PATCH 1/2] fix #279, update description

---
 einops/_backends.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/einops/_backends.py b/einops/_backends.py
index ea85db04..0468722b 100644
--- a/einops/_backends.py
+++ b/einops/_backends.py
@@ -3,11 +3,11 @@
 - backends are not imported unless those are actually needed, because
     - backends may not be installed
     - importing all available backends will drive to significant memory footprint
-    - backends may by present but installed with errors (but never used),
+    - backends may be present but installed with errors (but never used),
       importing may drive to crashes
-- backend should be either symbolic or imperative (tensorflow is for both, but that causes problems)
+- backend should be either symbolic or imperative
     - this determines which methods (from_numpy/to_numpy or create_symbol/eval_symbol) should be defined
-- if backend can't (temporarily) provide symbols for shape dimensions, UnknownSize objects are used
+- if backend can't provide symbols for shape dimensions, UnknownSize objects are used
 """
 
 import sys
@@ -29,7 +29,7 @@ def get_backend(tensor) -> "AbstractBackend":
     if _result is not None:
         return _result
 
-    for framework_name, backend in _loaded_backends.items():
+    for framework_name, backend in list(_loaded_backends.items()):
         if backend.is_appropriate_type(tensor):
             _type2backend[_type] = backend
             return backend

From fe9170607ea426de409649d8cf8c008e1639c828 Mon Sep 17 00:00:00 2001
From: Alex Rogozhnikov <iamfullofspam@gmail.com>
Date: Sun, 17 Sep 2023 23:06:38 -0700
Subject: [PATCH 2/2] use oneflow from pypi for tests

---
 test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test.py b/test.py
index ba47b3e2..661210f0 100644
--- a/test.py
+++ b/test.py
@@ -41,7 +41,7 @@ def main():
         "chainer": ["chainer"],
         "cupy": ["cupy"],
         "paddle": ["paddlepaddle==0.0.0 -f https://www.paddlepaddle.org.cn/whl/linux/cpu-mkl/develop.html"],
-        "oneflow": ["oneflow==0.9.0+cpu -f https://release.oneflow.info"],
+        "oneflow": ["oneflow==0.9.0"],
     }
 
     usage = f"""