Merge pull request #224 from persephone-tools/bugfix-floating-point-c…

…ompare

[MRG] Clean up assertion code

persephone/model.py

@@ -3,6 +3,7 @@
 import inspect
 import itertools
 import logging
+import math
 import os
 from pathlib import Path
 import sys
@@ -290,7 +291,10 @@ def eval(self, restore_model_path: Optional[str]=None) -> None:
                     print(" ".join(ref), file=refs_f)
 
             test_per = utils.batch_per(hyps, refs)
-            assert test_per == test_ler
+            if not math.isclose(test_per, test_ler, rel_tol=1e-07):
+                logger.warning("The label error rate from Tensorflow doesn't exactly"
+                                "match the phoneme error rate calculated in persephone"
+                                "Tensorflow %f, Persephone %f", test_ler, test_per)
             with open(os.path.join(hyps_dir, "test_per"), "w",
                       encoding=ENCODING) as per_f:
                 print("LER: %f" % (test_ler), file=per_f)