Update tests/test_utils_eval.py

tests/test_utils_eval.py

@@ -24,7 +24,7 @@ from slic.utils.eval import *
     ("3 + -4", -1),
     ("True + 1", 2),
     ("string", "string"),
-    ("1e1000 * 1e1000", inf), 
+    ("1e1000 * 1e1000", float("inf")), 
     ("'a' + 'b'", "ab")     # string concatenation supported !!!
 ])
 def test_arithmetic_eval_valid(expr, expected):