added to diff documentation, undid executable change, took out debugging script in test_scripts

Author: chrispycheng

nibabel/cmdline/diff.py

@@ -156,7 +156,8 @@ def get_data_diff(files, max_abs=0, max_rel=0):
 
     Returns
     -------
-    TODO
+    OrderedDict
+        str: absolute and relative differences of each file, given as float
     """
     # we are doomed to keep them in RAM now
     data = [f if isinstance(f, np.ndarray) else nib.load(f).get_data() for f in files]

nibabel/cmdline/tests/test_utils.py

@@ -77,9 +77,6 @@ def check_nib_diff_examples():
                       "quatern_c", "quatern_d", "qoffset_x", "qoffset_y", "qoffset_z", "srow_x",
                       "srow_y", "srow_z", "DATA(md5)", "DATA(diff 1:)"]
     for item in checked_fields:
-        if item not in stdout:
-            print(item)
-            print(stdout)
         assert_true(item in stdout)
 
     fnames2 = [pjoin(DATA_PATH, f)