Update app.py

app.py

@@ -39,6 +39,7 @@ class Sequence:
 
     @classmethod
     def prepare(cls, sequence):
+        sequence = sequence.strip().upper()
         ie = cls.integer_encoding(sequence)
         max_length = 100
         padded_ie = pad_sequences([ie], maxlen=max_length, padding='post', truncating='post')