From 7361974b7665e6564988d16ede6281a7077a5728 Mon Sep 17 00:00:00 2001
From: Eddy Comyn-Platt <53045993+EddyCMWF@users.noreply.github.com>
Date: Mon, 27 Feb 2023 11:08:31 +0000
Subject: Assertion error for cdsapi key (#60)

---
 cdsapi/api.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'cdsapi')

diff --git a/cdsapi/api.py b/cdsapi/api.py
index a603716..79c2ef3 100644
--- a/cdsapi/api.py
+++ b/cdsapi/api.py
@@ -322,6 +322,10 @@ class Client(object):
 
         self.session = session
         self.session.auth = tuple(self.key.split(":", 2))
+        assert len(self.session.auth)==2, (
+            "The cdsapi key provided is not the correct format, please ensure it conforms to:\n"
+            "<UID>:<APIKEY>"
+        )
 
         self.metadata = metadata
         self.forget = forget
-- 
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