DOC: small edits to tractogram_file docstrings

Author: matthew-brett

nibabel/streamlines/tractogram_file.py

@@ -1,3 +1,5 @@
+"""  Define abstract interface for Tractogram file classes
+"""
 from abc import ABCMeta, abstractmethod
 from nibabel.externals.six import with_metaclass
 
@@ -85,7 +87,7 @@ def is_correct_format(cls, fileobj):
 
     @abstractclassmethod
     def load(cls, fileobj, lazy_load=True):
-        """ Loads streamlines from a file-like object.
+        """ Loads streamlines from a filename or file-like object.
 
         Parameters
         ----------
@@ -107,7 +109,7 @@ def load(cls, fileobj, lazy_load=True):
 
     @abstractmethod
     def save(self, fileobj):
-        """ Saves streamlines to a file-like object.
+        """ Saves streamlines to a filename or file-like object.
 
         Parameters
         ----------

nibabel/streamlines/trk.py

@@ -309,7 +309,7 @@ def is_correct_format(cls, fileobj):
 
     @classmethod
     def load(cls, fileobj, lazy_load=False):
-        """ Loads streamlines from a file-like object.
+        """ Loads streamlines from a filename or file-like object.
 
         Parameters
         ----------
@@ -410,7 +410,7 @@ def save(self, fileobj):
         ----------
         fileobj : string or file-like object
             If string, a filename; otherwise an open file-like object
-            pointing to TRK file (and ready to read from the beginning
+            pointing to TRK file (and ready to write from the beginning
             of the TRK header data).
         """
         header = create_empty_header()