add check for model file before attempting to upload (#65)

alfalfa_client/alfalfa_client.py

@@ -26,11 +26,11 @@
 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 # ****************************************************************************************************
 
+import errno
 import json
 import os
 from collections import OrderedDict
 from datetime import datetime
-from numbers import Number
 from time import sleep, time
 from typing import List, Union
 from urllib.parse import urljoin
@@ -151,6 +151,8 @@ def upload_model(self, model_path: os.PathLike) -> ModelID:
         :param model_path: path to model file or folder or list of paths
 
         :returns: id of model"""
+        if not os.path.exists(model_path):
+            raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), model_path)
         model_path = prepare_model(model_path)
         filename = os.path.basename(model_path)
 
@@ -205,7 +207,7 @@ def submit(self, model_path: Union[str, List[str]], wait_for_status: bool = True
         return run_id
 
     @parallelize
-    def start(self, run_id: Union[RunID, List[RunID]], start_datetime: Union[Number, datetime], end_datetime: Union[Number, datetime], timescale: int = 5, external_clock: bool = False, realtime: bool = False, wait_for_status: bool = True):
+    def start(self, run_id: Union[RunID, List[RunID]], start_datetime: datetime, end_datetime: datetime, timescale: int = 5, external_clock: bool = False, realtime: bool = False, wait_for_status: bool = True):
         """Start one run from a model.
 
         :param run_id: id of run or list of ids

alfalfa_client/lib.py

@@ -125,7 +125,7 @@ def add_payload(self, payload):
         self.payload = payload
 
     def __str__(self) -> str:
-        if self.payload:
+        if hasattr(self, "payload"):
             return super().__str__() + '\nAPI Payload: \n' + json.dumps(self.payload)
         return super().__str__()