Changes after running replace_token_script.py

merges.txt

@@ -49994,4 +49994,3 @@ ar it
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replace_token_script.py

@@ -0,0 +1,80 @@
+''''This script was used to replace the final index of tokenizer.json and vocab.json
+     with "<|endoftext|>" token. Also reassociate the corresponding merges'''
+
+import json
+
+tokenizer_path = 'tokenizer.json'
+model_config_path = 'config.json'
+vocab_path = 'vocab.json'
+
+with open(vocab_path, "r") as f:
+    vocab_data = json.load(f)
+
+with open(tokenizer_path, "r") as f:
+    tokenizer_data = json.load(f)
+
+with open(model_config_path, "r") as f:
+    model_config = json.load(f)
+
+model_vocab_size = model_config['vocab_size']
+tokenizer_vocab = tokenizer_data['model']['vocab']
+
+mergeslength = len(tokenizer_data['model']['merges'])
+
+#readjust added_tokens 'id' to model_vocab_size - 1
+tokenizer_data['added_tokens'][-1]['id'] = model_vocab_size - 1
+
+final_index = model_vocab_size - 1
+eos = '<|endoftext|>'
+
+#retrieve the key of final index
+old_key_final_index_tokenizer = list(tokenizer_data['model']['vocab'].keys())[final_index]
+old_key_final_index_vocab = list(vocab_data.keys())[final_index]
+old_key_final_index_vocab_min2 = list(vocab_data.keys())[final_index - 1]
+old_key_final_index_tokenizer_merges = tokenizer_data['model']['merges'][mergeslength - 1]
+
+print(f"old_key_final_index_tokenizer = {old_key_final_index_tokenizer}")
+print(f"old_key_final_index_vocab = {old_key_final_index_vocab}")
+print(f"old_key_final_index_vocab_min2 = {old_key_final_index_vocab_min2}")
+print(f"old_key_final_index_tokenizer_merges = {old_key_final_index_tokenizer_merges}")
+
+#replace old key with new key
+tokenizer_data['model']['vocab']['<|endoftext|>'] = tokenizer_data['model']['vocab'][old_key_final_index_tokenizer]
+vocab_data[eos] = vocab_data[old_key_final_index_vocab]
+
+#replace the final merges idx with vocab_data - 1
+tokenizer_data['model']['merges'] = tokenizer_data['model']['merges'][: mergeslength - 1]
+
+
+#delete old key
+del tokenizer_data['model']['vocab'][old_key_final_index_tokenizer]
+del vocab_data[old_key_final_index_vocab]
+
+#check updated key
+old_key_final_index_tokenizer = list(tokenizer_data['model']['vocab'].keys())[final_index]
+old_key_final_index_vocab = list(vocab_data.keys())[final_index]
+old_key_final_index_tokenizer_merges = tokenizer_data['model']['merges'][mergeslength - 2]
+
+print(len(tokenizer_data['model']['merges']))
+print()
+print(f"updated old_key_final_index_tokenizer = {old_key_final_index_tokenizer}")
+print(f"updated old_key_final_index_vocab = {old_key_final_index_vocab}")
+print(f"updated old_key_final_index_tokenizer_merges = {old_key_final_index_tokenizer_merges}")
+
+with open(tokenizer_path, "w")as f:
+    json.dump(tokenizer_data, f)
+
+with open(vocab_path, "w")as f:
+    json.dump(vocab_data, f)
+
+with open('merges.txt') as f:
+    lines = f.readlines()
+
+with open("merges.txt", "w") as f:
+    for i in range(len(lines) - 1):
+        f.write(lines[i])
+
+with open('merges.txt') as f:
+    newlines = f.readlines()
+
+print(f"newlines[len(newlines) - 1] = {newlines[len(newlines) - 1]}")