light touchups to export script so one doesn't need to pass in a slash at the end

export_meta_llama_bin.py

@@ -1,6 +1,7 @@
 """
 This script exports the Llama 2 weights in llama2c.bin format.
 """
+import os
 import sys
 import struct
 from pathlib import Path
@@ -89,16 +90,13 @@ def concat_weights(models):
 
 
 def load_and_export(model_path, output_path):
-    with open(model_path + 'params.json') as f:
+    params_path = os.path.join(model_path, 'params.json')
+    with open(params_path) as f:
         params = json.load(f)
         print(params)
 
     model_paths = sorted(list(Path(model_path).glob('consolidated.*.pth')))
-    models = []
-    for i in model_paths:
-        print(f'Loading {i}')
-        models.append(torch.load(i, map_location='cpu'))
-
+    models = [torch.load(p, map_location='cpu') for p in model_paths]
     state_dict = concat_weights(models)
     del models
     export(params, state_dict, output_path)