Update app.py

app.py

@@ -22,9 +22,9 @@ def greet(name):
 	X = pd.DataFrame()
 	for i in range(8):
 		# Get, rename column and rescalef
-		next_day_date = datetime.today() - timedelta(days=i)
-		next_day = next_day_date.strftime ('%Y-%m-%d')
-		json = get_weather_by_date(next_day)
+		target_date = datetime.today() - timedelta(days=i)
+		target_date = target_date.strftime('%Y-%m-%d')
+		json = get_weather_by_date(target_date)
 		X = X.append(json['days'][0], ignore_index=True)