try new method to update_trips v2

requirements.txt

@@ -3,10 +3,6 @@ dash>=1.18.0
 plotly>=4
 pandas
 oauth2_client
-python-dateutil
-certifi
-urllib3
-six
 requests
 numpy
 pytz
@@ -14,4 +10,10 @@ typing
 argparse
 flask
 dash_bootstrap_components
-geojson
+geojson
+
+#swagger req
+certifi >= 14.05.14
+six >= 1.10
+python_dateutil >= 2.5.3
+urllib3 >= 1.15.1

web/callback.py

@@ -115,6 +115,7 @@ def update_trips():
 
 
 try:
+    web.db.callback_fct = update_trips
     update_trips()
     min_date = trips[0].start_at
     max_date = trips[-1].start_at
@@ -158,4 +159,3 @@ dash_app.layout = dbc.Container(fluid=True, children=[
     data_div
 ])
 
-web.db.update_callback = update_trips

web/db.py

@@ -2,12 +2,15 @@ import sqlite3
 from datetime import datetime
 import pytz
 
+callback_fct = None
 
 def convert_datetime(st):
     return datetime.strptime(st.decode("utf-8"), "%Y-%m-%d %H:%M:%S+00:00").replace(tzinfo=pytz.UTC)
 
 
 def update_callback():
+    if callback_fct is not None:
+        callback_fct()
     return
 
 def get_db():