more printing

nifty5/operators/scaling_operator.py

@@ -24,6 +24,7 @@ from ..compat import *
 from ..domain_tuple import DomainTuple
 from ..sugar import full
 from .endomorphic_operator import EndomorphicOperator
+from .. import utilities
 
 
 class ScalingOperator(EndomorphicOperator):
@@ -94,3 +95,7 @@ class ScalingOperator(EndomorphicOperator):
         from ..sugar import from_random
         return from_random(random_type="normal", domain=self._domain,
                            std=self._get_fct(from_inverse), dtype=dtype)
+
+    def __repr__(self):
+        subs = utilities.indent(self._domain.__repr__())
+        return "ScalingOperator:\n  Factor={}\n".format(self._factor) + subs

nifty5/operators/sum_operator.py

@@ -21,7 +21,7 @@ from __future__ import absolute_import, division, print_function
 import numpy as np
 
 from ..compat import *
-from ..utilities import my_sum
+from ..utilities import my_sum, indent
 from .linear_operator import LinearOperator
 from .scaling_operator import ScalingOperator
 from .diagonal_operator import DiagonalOperator
@@ -196,3 +196,7 @@ class SumOperator(LinearOperator):
             tmp = op.draw_sample(from_inverse, dtype)
             res = tmp if res is None else res.unite(tmp)
         return res
+
+    def __repr__(self):
+        subs = "\n".join(sub.__repr__() for sub in self._ops)
+        return "SumOperator:\n"+indent(subs)