From 08e61ea200d04326f8f40a3130ef613f84cd854d Mon Sep 17 00:00:00 2001
From: Hsiaoming Yang <me@lepture.com>
Date: Thu, 22 Mar 2018 23:38:52 +0900
Subject: [PATCH] Add tip for dotenv

---
 flask/cli.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/flask/cli.py b/flask/cli.py
index 2a65498e..3e2823c7 100644
--- a/flask/cli.py
+++ b/flask/cli.py
@@ -585,6 +585,11 @@ def load_dotenv(path=None):
     """
 
     if dotenv is None:
+        if path or os.path.exists('.env') or os.path.exists('.flaskenv'):
+            click.secho(
+                ' * Tip: There are .env files present.'
+                ' Do "pip install python-dotenv" to use them',
+                fg='yellow')
         return
 
     if path is not None: