always use lowercase language identifiers (#25)

* always use lowercase language identifiers
* version bump; add python 3.7 to travis

.travis.yml

@@ -1,9 +1,13 @@
 language: python
-python:
-    - "3.3"
-    - "3.4"
-    - "3.5"
-    - "3.6"
+matrix:
+    include:
+        - python: 3.3
+        - python: 3.4
+        - python: 3.5
+        - python: 3.6
+        - python: 3.7
+          dist: xenial
+          sudo: true
 
 install:
   - pip install -r requirements/requirements-dev.txt

CHANGELOG.md

@@ -1,5 +1,8 @@
 # pyspellchecker
 
+## Version 0.2.1
+* Ignore case for language identifiers
+
 ## Version 0.2.0
 * Changed `words` function to `split_words` to differentiate with the `word_frequency.words` function
 * Added ***Portuguese*** dictionary: `pt`

spellchecker/info.py

@@ -5,7 +5,7 @@
 __maintainer__ = 'Tyler Barrus'
 __email__ = 'barrust@gmail.com'
 __license__ = 'MIT'
-__version__ = '0.2.0'
+__version__ = '0.2.1'
 __credits__ = ['Peter Norvig']
 __url__ = 'https://github.com/barrust/pyspellchecker'
 __bugtrack_url__ = '{0}/issues'.format(__url__)

spellchecker/spellchecker.py

@@ -32,12 +32,12 @@ def __init__(self, language='en', local_dictionary=None, distance=2):
         if local_dictionary:
             self._word_frequency.load_dictionary(local_dictionary)
         elif language:
-            filename = '{}.json.gz'.format(language)
+            filename = '{}.json.gz'.format(language.lower())
             here = os.path.dirname(__file__)
             full_filename = os.path.join(here, 'resources', filename)
             if not os.path.exists(full_filename):
                 msg = ('The provided dictionary language ({}) does not '
-                       'exist!').format(language)
+                       'exist!').format(language.lower())
                 raise ValueError(msg)
             self._word_frequency.load_dictionary(full_filename)