Moved from 'DEBUG' envvar to 'FLASK_ENV'

Grasia · Aug 29, 2018 · d66e3dd · d66e3dd
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diff --git a/README.md b/README.md
@@ -76,6 +76,12 @@ For instance, suppose that your data is stored in `/var/tmp`, you might launch w
 
 It will show all the files ending in .csv as wikis available to analyze and plot.
 
+## Development environment
+
+To get errors messages, backtraces and automatic reloading when source code changes, you must set the environment variable: FLASK_ENV to 'development', i.e.: `export FLASK_ENV=development` prior to launch `app.py`.
+
+You can get more information on this in the [Flask documentation](http://flask.pocoo.org/docs/1.0/server/).
+
 # Deployment
 The easiest way is to follow the Dash instructions: https://plot.ly/dash/deployment
 

diff --git a/app.py b/app.py
@@ -33,7 +33,7 @@
 
 # production or development (DEBUG) flag:
 global debug;
-debug = 'DEBUG' in os.environ
+debug = True if os.environ.get('FLASK_ENV') == 'development' else False
 
 # get csv data location (data/ by default)
 global data_dir;