From d46ff9301480a102d2fb7f26b4d64fb6a03fde78 Mon Sep 17 00:00:00 2001
From: Matt Wala <wala1@illinois.edu>
Date: Fri, 17 Feb 2017 12:51:49 -0600
Subject: [PATCH] Pull magic string out.
---
sumpy/symbolic.py | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/sumpy/symbolic.py b/sumpy/symbolic.py
index 5cbd3df2..85dbb278 100644
--- a/sumpy/symbolic.py
+++ b/sumpy/symbolic.py
@@ -47,21 +47,23 @@ def _find_symbolic_backend():
symengine_found = False
ALLOWED_BACKENDS = ("sympy", "symengine") # noqa
+ BACKEND_ENV_VAR = "SUMPY_FORCE_SYMBOLIC_BACKEND" # noqa
import os
- backend = os.environ.get("SUMPY_FORCE_SYMBOLIC_BACKEND")
+ backend = os.environ.get(BACKEND_ENV_VAR)
if backend is not None:
if backend not in ALLOWED_BACKENDS:
raise RuntimeError(
- "SUMPY_FORCE_SYMBOLIC_BACKEND value is unrecognized: '%s' "
+ "%s value is unrecognized: '%s' "
"(allowed values are %s)" % (
+ BACKEND_ENV_VAR,
backend,
", ".join("'%s'" % val for val in ALLOWED_BACKENDS)))
if backend == "symengine" and not symengine_found:
from warnings import warn
- warn("SUMPY_FORCE_SYMBOLIC_BACKEND=symengine was specified, but "
- "could not find symengine. Using sympy.", RuntimeWarning)
+ warn("%s=symengine was specified, but could not find symengine. "
+ "Using sympy." % BACKEND_ENV_VAR, RuntimeWarning)
USE_SYMENGINE = backend == "symengine" and symengine_found
else:
--
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