fix for travis py3.3 and py3.7

Author: Valian

.travis.yml

@@ -4,17 +4,19 @@ language: python
 
 python:
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
   - "3.6"
-  - "3.7"
 
 matrix:
   fast_finish: true
+  include:
+  - python: 3.7
+    dist: xenial
+    sudo: true
 
 # command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
-install: pip install -r requirements_test.txt
+install: pip install tox-travis
 
 # command to run tests using coverage, e.g. python setup.py test
 script: tox

README.rst

@@ -105,7 +105,7 @@ Also, if we just want to know if action is permitted, just let's run:
     False
     
     >>> validation.error  # it's an actual exception
-    LogicException('Validation failed!',)
+    LogicException('Validation failed!')
 
 
 
@@ -155,7 +155,7 @@ make our own errors!
    False
    
    >>> result.error
-   LogicException('User is too young to watch this',)
+   LogicException('User is too young to watch this')
    
    >>> result.error_code == 'CANT_WATCH_MOVIE_TOO_YOUNG'
    True