change api to error

Author: JessicaS11

binder/environment.yml

@@ -2,6 +2,7 @@ name: earthaccess
 channels:
   - conda-forge
 dependencies:
+  - boto3
   - python=3.9
   - xarray>=0.19
   - dask>=2022.1

earthaccess/api.py

@@ -371,7 +371,8 @@ def in_us_west_2() -> str:
         str: string indicating if the user is in AWS region us-west-2
     """
     if earthaccess.__store__._running_in_us_west_2() is True:
-        msg = "You are running in AWS region 'us-west-2'"
+        return "You are running in AWS region 'us-west-2'"
     else:
-        msg = "You are not running in AWS region 'us-west-2'"
-    return msg
+        raise ValueError('Your instance is not running inside the'
+                             ' AWS us-west-2 region.'
+                             ' You will not be able to directly access NASA Earthdata S3 buckets')

earthaccess/store.py

@@ -144,9 +144,7 @@ def _running_in_us_west_2(self) -> bool:
         if (boto3.client('s3').meta.region_name == 'us-west-2'):
             return True
         else:
-            raise ValueError('Your instance is not running inside the'
-                             ' AWS us-west-2 region.'
-                             ' You will not be able to directly access NASA Earthdata S3 buckets')
+            return False
 
     def set_requests_session(
         self, url: str, method: str = "get", bearer_token: bool = False