From b2d8c1b6cc84efea873bd91896e786f4d3f0c565 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9gis=20Behmo?= <regis@behmo.com>
Date: Tue, 9 Apr 2019 18:28:19 -0700
Subject: [PATCH] Improve cold start time by moving kubernetes import

"import kubernetes" takes a long time. Moving this import improves
"tutor --version" from 0.8s to 0.3s.
---
 CHANGELOG.md | 1 +
 tutor/k8s.py | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21548b9..ca02af8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Latest
 
+- [Improvement] Improve CLI cold start performance
 - [Improvement] Allow uppercase "Y" and "N" as answers to boolean questions
 
 ## v3.3.4 (2019-04-09)
diff --git a/tutor/k8s.py b/tutor/k8s.py
index 10a2ac9..21ffa87 100644
--- a/tutor/k8s.py
+++ b/tutor/k8s.py
@@ -1,5 +1,4 @@
 import click
-import kubernetes
 
 from . import config as tutor_config
 from . import env as tutor_env
@@ -138,6 +137,8 @@ class K8s:
     @property
     def client(self):
         if self.CLIENT is None:
+            # Import moved here for performance reasons
+            import kubernetes
             kubernetes.config.load_kube_config()
             self.CLIENT = kubernetes.client.CoreV1Api()
         return self.CLIENT