fix: prepare.py - added input file opening in UTF-8 encoding

Author: adambala

data/shakespeare/prepare.py

@@ -7,10 +7,10 @@
 input_file_path = os.path.join(os.path.dirname(__file__), 'input.txt')
 if not os.path.exists(input_file_path):
     data_url = 'https://raw.githubusercontent.com/karpathy/char-rnn/master/data/tinyshakespeare/input.txt'
-    with open(input_file_path, 'w') as f:
+    with open(input_file_path, 'w', encoding='utf-8') as f:
         f.write(requests.get(data_url).text)
 
-with open(input_file_path, 'r') as f:
+with open(input_file_path, 'r', encoding='utf-8') as f:
     data = f.read()
 n = len(data)
 train_data = data[:int(n*0.9)]