From 4377f11beb7d452fce1e9a4f5540f36c1e615c7a Mon Sep 17 00:00:00 2001
From: Jason Munro <jmunro@lbl.gov>
Date: Tue, 1 Feb 2022 14:47:36 -0800
Subject: [PATCH] Format endpoint in MPRester (#502)

* Format endpoint in MPRester

* Fix warning

* Fix mypy

* Fix warnings formatting

* Fix whitespace
---
 src/mp_api/client.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/mp_api/client.py b/src/mp_api/client.py
index 77325142..62b07033 100644
--- a/src/mp_api/client.py
+++ b/src/mp_api/client.py
@@ -126,14 +126,18 @@ def __init__(
 
         try:
             self.contribs = Client(api_key)
-        except Exception:
+        except Exception as error:
             self.contribs = None
+            warnings.warn(f"Problem loading MPContribs client: {error}")
 
         self._all_resters = []
 
         if notify_db_version:
             raise NotImplementedError("This has not yet been implemented.")
 
+        if not self.endpoint.endswith("/"):
+            self.endpoint += "/"
+
         for cls in BaseRester.__subclasses__():
 
             rester = cls(