fix bug in sp

Author: zaidalyafeai

.gitignore

@@ -5,6 +5,7 @@ __pycache__/
 *.py[cod]
 *$py.class
 
+*.model 
 # C extensions
 *.so
 

tkseem/sentencepiece_tokenizer.py

@@ -53,8 +53,8 @@ def load_model(self, file_path):
         Args:
             file_path (str): file path of the trained model
         """
-        sp = spm.SentencePieceProcessor()
-        self.sp = sp.Load(file_path)
+        self.sp = spm.SentencePieceProcessor()
+        self.sp.Load(file_path)
 
     def save_model(self, file_path):
         """Save a model as a freqency dictionary