create directory if it doesn't exist

lib/dtypes.py

@@ -9,6 +9,10 @@ import scipy.io
 from lib import config
 
 def download_ss_index(path):
+
+    path_dir = path.parent
+    path_dir.mkdir(parents=True, exist_ok=True) 
+
     with open(path, "wb") as f:
         req = requests.get(config.SS_ROOT_URL + "/files/ss_index.mat")
         f.write(req.content)
@@ -51,4 +55,4 @@ def dtype_from_rbtype(rbtype):
 
 DTYPES = {}
 for i in range(len(names)):
-    DTYPES[(groups[i], names[i])] = dtype_from_rbtype(rbtype[i])
+    DTYPES[(groups[i], names[i])] = dtype_from_rbtype(rbtype[i])