Add travis, requirements, and Python object

Author: Pål Grønås Drange

.travis.yml

@@ -0,0 +1,16 @@
+dist: trusty
+language: python
+sudo: required
+
+addons:
+  apt:
+    packages:
+      - python-numpy
+      - python-pandas
+      - python-scipy
+
+script:
+  - sudo pip install nose
+  - export PYTHONPATH=$PYTHONPATH:.
+  - python setup.py build
+  - python setup.py test

pybobyqa/controller.py

@@ -54,7 +54,7 @@
 EXIT_LINALG_ERROR = -3  # error, linalg error (singular matrix encountered)
 
 
-class ExitInformation:
+class ExitInformation(object):
     def __init__(self, flag, msg_details):
         self.flag = flag
         self.msg = msg_details
@@ -92,7 +92,7 @@ def able_to_do_restart(self):
             return "sufficiently small" not in self.msg  # restart for rho=rhoend and noise level termination
 
 
-class Controller:
+class Controller(object):
     def __init__(self, objfun, x0, f0, f0_nsamples, xl, xu, npt, rhobeg, rhoend, nf, nx, maxfun, params, scaling_changes):
         self.objfun = objfun
         self.maxfun = maxfun

pybobyqa/diagnostic_info.py

@@ -46,7 +46,7 @@
 ITER_SAFETY = "Safety"  # safety step taken (||s|| too small compared to rho)
 
 
-class DiagnosticInfo:
+class DiagnosticInfo(object):
     def __init__(self):
         self.data = {}
         # Initialise everything we want to store

pybobyqa/hessian.py

@@ -35,7 +35,7 @@
 __all__ = ['Hessian']
 
 
-class Hessian:
+class Hessian(object):
     def __init__(self, n, vals=None):
         self.n = n
         if vals is None:

pybobyqa/model.py

@@ -41,7 +41,7 @@
 __all__ = ['Model']
 
 
-class Model:
+class Model(object):
     def __init__(self, npt, x0, f0, xl, xu, f0_nsamples, n=None, abs_tol=-1e20, precondition=True):
         if n is None:
             n = len(x0)

pybobyqa/params.py

@@ -31,7 +31,7 @@
 __all__ = ['ParameterList']
 
 
-class ParameterList:
+class ParameterList(object):
     def __init__(self, n, npt, maxfun, objfun_has_noise=False):
         self.params = {}
         # Rounding error constant (for shifting base)

pybobyqa/solver.py

@@ -44,7 +44,7 @@
 
 
 # A container for the results of the optimization routine
-class OptimResults:
+class OptimResults(object):
     def __init__(self, xmin, fmin, gradmin, hessmin, nf, nx, nruns, exit_flag, exit_msg):
         self.x = xmin
         self.f = fmin

requirements.txt

@@ -0,0 +1,3 @@
+numpy>=1.11
+scipy>=0.18
+pandas>=0.17