Wrote and updated some docstrings in Phonopy

phonopy/api_phonopy.py

@@ -195,6 +195,7 @@ class Phonopy(object):
             Primitive cell.
 
         """
+
         return self._primitive
 
     def get_primitive(self):
@@ -208,6 +209,7 @@ class Phonopy(object):
             Unit cell.
 
         """
+
         return self._unitcell
 
     def get_unitcell(self):
@@ -221,6 +223,7 @@ class Phonopy(object):
             Supercell.
 
         """
+
         return self._supercell
 
     def get_supercell(self):
@@ -278,6 +281,7 @@ class Phonopy(object):
             shape=(3, 3), dtype='double', order='C'
 
         """
+
         return self._primitive_matrix
 
     def get_primitive_matrix(self):
@@ -508,6 +512,14 @@ class Phonopy(object):
 
     @property
     def supercells_with_displacements(self):
+        """Supercells with displacements
+
+        list of PhonopyAtoms
+            Supercells with displacements generated by
+            Phonopy.generate_displacements.
+
+        """
+
         if self._displacement_dataset is None:
             return None
         else:
@@ -520,6 +532,7 @@ class Phonopy(object):
 
     @property
     def mesh_numbers(self):
+        """Sampling mesh numbers in reciprocal space"""
         if self._mesh is None:
             return None
         else: