fix: trailing white space and os separator

Author: htwangtw

nibabel/gifti/gifti.py

@@ -731,7 +731,7 @@ def agg_data(self, intent_code=None):
                  641.19586 ,  638.7647  ],
                [ 612.9056  ,  607.3228  ,  606.1355  , ...,  608.2441  ,
                  615.8239  ,  613.0585  ],
-               ..., 
+               ...,
                [ 101.28482 ,  101.41192 ,   99.21213 , ...,  100.47232 ,
                   99.258316,   99.440796],
                [ 371.81592 ,  367.02896 ,  363.90207 , ...,  365.52597 ,
@@ -754,7 +754,7 @@ def agg_data(self, intent_code=None):
                  641.19586 ,  638.7647  ],
                [ 612.9056  ,  607.3228  ,  606.1355  , ...,  608.2441  ,
                  615.8239  ,  613.0585  ],
-               ..., 
+               ...,
                [ 101.28482 ,  101.41192 ,   99.21213 , ...,  100.47232 ,
                   99.258316,   99.440796],
                [ 371.81592 ,  367.02896 ,  363.90207 , ...,  365.52597 ,

nibabel/testing/__init__.py

@@ -35,9 +35,9 @@
 
 def test_data(subdir=None, fname=None):
     if subdir is None:
-        resource = 'tests/data'
+        resource = os.path.join('tests', 'data')
     elif subdir in ('gifti', 'nicom', 'externals'):
-        resource = '%s/tests/data' % subdir
+        resource = os.path.join(subdir, 'tests', 'data')
     else:
         raise ValueError("Unknown test data directory: %s" % subdir)