Update app.py

app.py

@@ -108,6 +108,7 @@ def decode_sequence(input_seq):
 def predict(s):
     pattern = r'[^a-zA-Z\s]'
     text_input = re.sub(pattern, '', s)
+    text_input=text_input.lower()
     s = text_input.split()
     encoder_input_data = np.zeros(
     (len(s), max_encoder_seq_length, num_encoder_tokens), dtype="float32"