Add Mode as rt to avoid str Object decoding issue

Author: Musketeer-Liu

mla/datasets/base.py

@@ -51,7 +51,7 @@ def load(dataset="training", digits=np.arange(10)):
 
 
 def load_nietzsche():
-    text = open(get_filename("data/nietzsche.txt", "rt")).read().decode("utf-8").lower()
+    text = open(get_filename("data/nietzsche.txt"), "rt").read().lower()
     chars = set(list(text))
     char_indices = {ch: i for i, ch in enumerate(chars)}
     indices_char = {i: ch for i, ch in enumerate(chars)}