relocate exception in right place

main.py

@@ -1,7 +1,6 @@
 import bottle
 request  = bottle.request
 response = bottle.response
-redirect = bottle.redirect
 import smtplib
 from email.mime.text import MIMEText
 from email.mime.multipart import MIMEMultipart
@@ -17,11 +16,6 @@ import datetime # to name unsent mails
 
 ##################################################### Bottle stuff ############################################
 
-# The exception that is thrown when an argument is missing
-class MissingParameterException (Exception):
-    pass
-
-
 class StripPathMiddleware(object):
     '''
     Get that slash out of the request
@@ -37,6 +31,11 @@ app = application = bottle.Bottle(catchall=False)
 
 
 ##################################################### Configuration ############################################
+
+# The exception that is thrown when an argument is missing
+class MissingParameterException (Exception):
+    pass
+
 def get_env(var, default=None):
     """var is an env var name, default is the value to return if var does not exist. If no default and no value, an exception is raised."""
     if var in os.environ:
@@ -92,13 +91,14 @@ mongodb_database = mongodb_client[mongodb_dbname]
 
 @app.post('/submit')
 def submission ():
-    # Getting subject
+    # Getting token
     if 'token' in request.forms:
         token = request.forms.getunicode('token')
     else:
         response.status = 400
         return 'Le jeton d’autentification est requis'
 
+    # Getting mail address
     if 'mail' in request.forms:
         from_address = request.forms.getunicode('mail')
     else:
@@ -145,7 +145,7 @@ def submission ():
 
 
     # Redirection
-    #redirect(success_redirect_default)
+    #bottle.redirect(success_redirect_default)
     origin = request.headers.get('origin')
     return '<p>Mail envoyé !</p>' + ('<p>Retour au <a href="{}">formulaire de contact</a></p>'.format(origin) if origin else '')