cosmetics

nifty5/operators/energy_operators.py

@@ -65,6 +65,7 @@ class Squared2NormOperator(EnergyOperator):
             return x.new(val, jac)
         return Field.scalar(x.vdot(x))
 
+
 class QuadraticFormOperator(EnergyOperator):
     """Computes the L2-norm of a Field or MultiField with respect to a
     specific kernel given by `endo`.

nifty5/operators/log1p.py

@@ -40,4 +40,3 @@ class Log1p(Operator):
             return res
         jac = DiagonalOperator(1/(1+xval))
         return x.new(res, jac@x.jac)
-

test/test_energy_gradients.py

@@ -46,10 +46,12 @@ def test_gaussian(field):
     energy = ift.GaussianEnergy(domain=field.domain)
     ift.extra.check_jacobian_consistency(energy, field)
 
+
 def test_studentt(field):
     energy = ift.StudentTEnergy(domain=field.domain, theta=.5)
     ift.extra.check_jacobian_consistency(energy, field, tol=1e-6)
 
+
 def test_inverse_gamma(field):
     field = field.exp()
     space = field.domain