1 files changed, 7 insertions, 0 deletions
diff --git a/Wrappers/Python/ccpi/optimisation/operators/Operator.py b/Wrappers/Python/ccpi/optimisation/operators/Operator.py
index 95082f4..cdf15a7 100755
--- a/Wrappers/Python/ccpi/optimisation/operators/Operator.py
+++ b/Wrappers/Python/ccpi/optimisation/operators/Operator.py
@@ -12,12 +12,19 @@ class Operator(object):
         '''Returns if the operator is linear'''
         return False
     def direct(self,x, out=None):
+        '''Returns the application of the Operator on x'''
         raise NotImplementedError
     def norm(self):
+        '''Returns the norm of the Operator'''
         raise NotImplementedError
     def range_geometry(self):
+        '''Returns the range of the Operator: Y space'''
         raise NotImplementedError
     def domain_geometry(self):
+        '''Returns the domain of the Operator: X space'''
         raise NotImplementedError
     def __rmul__(self, scalar):
+        '''Defines the multiplication by a scalar on the left
+
+        returns a ScaledOperator'''
         return ScaledOperator(self, scalar)