solve pydocstyle issues

Author: fs446

sfs/array.py

@@ -34,6 +34,7 @@ class SecondarySourceDistribution(namedtuple('SecondarySourceDistribution',
     __slots__ = ()
 
     def __repr__(self):
+        """Return representation string."""
         return 'SecondarySourceDistribution(\n' + ',\n'.join(
             '    {}={}'.format(name, repr(data).replace('\n', '\n      '))
             for name, data in zip('xna', self)) + ')'
@@ -284,9 +285,7 @@ def rectangular(N, spacing, center=[0, 0, 0], orientation=[1, 0, 0]):
 
 
 def rounded_edge(Nxy, Nr, dx, center=[0, 0, 0], orientation=[1, 0, 0]):
-    """Return secondary source distribution along the xy-axis with rounded
-    edge at the origin.
-
+    """Return SSD along the xy-axis with rounded edge at the origin.
 
     Parameters
     ----------
@@ -360,9 +359,8 @@ def rounded_edge(Nxy, Nr, dx, center=[0, 0, 0], orientation=[1, 0, 0]):
 
 
 def edge(Nxy, dx, center=[0, 0, 0], orientation=[1, 0, 0]):
-    """Return secondary source distribution along the xy-axis with sharp
-    edge at the origin.
-
+    """
+    Return SSD along the xy-axis with sharp edge at the origin.
 
     Parameters
     ----------