Change BASES constant to a local variable

src/model.py

@@ -1,10 +1,8 @@
 from tensorflow.keras import Model, Sequential, layers
 from tensorflow.keras.regularizers import l2
 
-from preprocessing import BASES
 
-
-def build_model(hyper_parameters) -> Model:
+def build_model(hyper_parameters, bases="ACGT") -> Model:
     """
     Builds the CNN model
     """
@@ -41,6 +39,6 @@ def build_model(hyper_parameters) -> Model:
             ),
             layers.Dropout(rate=0.3),
             # Output layer with softmax activation
-            layers.Dense(units=len(BASES), activation="softmax"),
+            layers.Dense(units=len(bases), activation="softmax"),
         ]
     )