[Python] compatibility with 2.7 & 3.4

.travis.yml

-language: generic
+language: python
 python:
   - "2.7"
+  - "3.4"
 sudo: required
 dist: trusty
 compiler:
@@ -9,7 +10,7 @@ compiler:
 env:
   global:
     - secure: "SnIBG/xLIHX3CSvUbqqsX8xTVqIqQ7fFS6HWO6KZQVBsT6yugTwYHbyhNiU531JejYJ/I3ZrDhXfYH3qFZiYxnH1sifvwV+fnTtMXpPN7qPZwIymkjcmm6gJF51e0C7VOfUbvKFv0ngwj+ul21rgZSMuoEvxPK0WxtE3/ZSfn9c="
-    - APT_DEPENDENCIES="doxygen libeigen3-dev "
+    - APT_DEPENDENCIES="doxygen libeigen3-dev libboost-test-dev libboost-python-dev libeigen3-dev"
     - DEBSIGN_KEYID=5AE5CD75
     - CC=gcc
     - DO_COVERAGE_ON_BRANCH="master;release"
@@ -19,24 +20,18 @@ env:
     - BUILDTYPE=Release
     - BUILDTYPE=Debug
 notifications:
-email:
-  - pinocchio@laas.fr
+  email:
+    - pinocchio-build@laas.fr
 branches:
-only:
-  - master
-  - debian
-  - devel
-matrix:
-allow_failures:
-  - compiler:
-before_install: ./travis_custom/custom_before_install
-install:
-  - pip install --user coveralls
-  - pip install --user numpy
+  only:
+    - master
+    - debian
+    - devel
+before_install: ./.travis/run before_install
+install: pip install coveralls numpy
 script:
   - export CMAKE_ADDITIONAL_OPTIONS="-DCMAKE_BUILD_TYPE=${BUILDTYPE}"
   - sudo free -m -t
   - ./.travis/run ../travis_custom/custom_build
 after_failure: ./.travis/run after_failure
-after_success:
-  - ./.travis/run after_success
+after_success: ./.travis/run after_success

travis_custom/custom_before_install

-#!/bin/bash
-set -e
-
-# Setup environment variables.
-export APT_DEPENDENCIES="doxygen libboost-test-dev libboost-python-dev libeigen3-dev python2.7-dev python-numpy"
-
-# When this script is called the current directory is ./custom_travis
-. ./.travis/run ../.travis/before_install

unittest/python/test_eigenpy.py

+from __future__ import print_function
+
 import numpy as np
 import matrix as eigenpy
 
 verbose = False
 
-if verbose: print "===> From MatrixXd to Py"
+if verbose: print("===> From MatrixXd to Py")
 M = eigenpy.naturals(3,3,verbose)
 Mcheck = np.reshape(np.matrix(range(9),np.double),[3,3])
 assert np.array_equal(Mcheck,M)
 
-if verbose: print "===> From Matrix3d to Py"
+if verbose: print("===> From Matrix3d to Py")
 M33= eigenpy.naturals33(verbose)
 assert np.array_equal(Mcheck,M33)
 
-if verbose: print "===> From VectorXd to Py"
+if verbose: print("===> From VectorXd to Py")
 v = eigenpy.naturalsX(3,verbose)
 vcheck = np.matrix([range(3),],np.double).T
 assert np.array_equal(vcheck ,v)
 
-if verbose: print "===> From Py to Eigen::MatrixXd"
-if verbose: print "===> From Py to Eigen::MatrixXd"
-if verbose: print "===> From Py to Eigen::MatrixXd"
+if verbose: print("===> From Py to Eigen::MatrixXd")
+if verbose: print("===> From Py to Eigen::MatrixXd")
+if verbose: print("===> From Py to Eigen::MatrixXd")
 Mref = np.reshape(np.matrix(range(64),np.double),[8,8])
 
-if verbose: print "===> Matrix 8x8"
+if verbose: print("===> Matrix 8x8")
 M = Mref
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block 0:3x0:3"
+if verbose: print("===> Block 0:3x0:3")
 M = Mref[0:3,0:3]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block 1:3x1:3"
+if verbose: print("===> Block 1:3x1:3")
 M = Mref[1:3,1:3]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block 1:5:2x1:5:2"
+if verbose: print("===> Block 1:5:2x1:5:2")
 M = Mref[1:5:2,1:5:2]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block 1:8:3x1:5"
+if verbose: print("===> Block 1:8:3x1:5")
 M = Mref[1:8:3,1:5]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block transpose 1:8:3x1:6:2"
+if verbose: print("===> Block transpose 1:8:3x1:6:2")
 M = Mref[1:8:3,0:6:2].T
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block Vector 1x0:6:2"
+if verbose: print("===> Block Vector 1x0:6:2")
 M = Mref[1:2,0:6:2]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block Vector 1x0:6:2 tanspose"
+if verbose: print("===> Block Vector 1x0:6:2 tanspose")
 M = Mref[1:2,0:6:2].T
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block Vector 0:6:2x1"
+if verbose: print("===> Block Vector 0:6:2x1")
 M = Mref[0:6:2,1:2]
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> Block Vector 0:6:2x1 tanspose"
+if verbose: print("===> Block Vector 0:6:2x1 tanspose")
 M = Mref[0:6:2,1:2].T
 assert( np.array_equal(M,eigenpy.reflex(M,verbose)) );
 
-if verbose: print "===> From Py to Eigen::VectorXd"
-if verbose: print "===> From Py to Eigen::VectorXd"
-if verbose: print "===> From Py to Eigen::VectorXd"
+if verbose: print("===> From Py to Eigen::VectorXd")
+if verbose: print("===> From Py to Eigen::VectorXd")
+if verbose: print("===> From Py to Eigen::VectorXd")
 
-if verbose: print "===> Block Vector 0:6:2x1 1 dim"
+if verbose: print("===> Block Vector 0:6:2x1 1 dim")
 M = Mref[0:6:2,1].T
 assert( np.array_equal(M.T,eigenpy.reflexV(M,verbose)) );
 
-if verbose: print "===> Block Vector 0:6:2x1"
+if verbose: print("===> Block Vector 0:6:2x1")
 M = Mref[0:6:2,1:2]
 assert( np.array_equal(M,eigenpy.reflexV(M,verbose)) );
 
-if verbose: print "===> Block Vector 0:6:2x1 transpose"
+if verbose: print("===> Block Vector 0:6:2x1 transpose")
 M = Mref[0:6:2,1:2].T
 assert( np.array_equal(M.T,eigenpy.reflexV(M,verbose)) );
 
-if verbose: print "===> From Py to Eigen::Matrix3d"
-if verbose: print "===> From Py to Eigen::Matrix3d"
-if verbose: print "===> From Py to Eigen::Matrix3d"
+if verbose: print("===> From Py to Eigen::Matrix3d")
+if verbose: print("===> From Py to Eigen::Matrix3d")
+if verbose: print("===> From Py to Eigen::Matrix3d")
 
-if verbose: print "===> Block Vector 0:3x0:6:2 "
+if verbose: print("===> Block Vector 0:3x0:6:2 ")
 M = Mref[0:3,0:6:2]
 assert( np.array_equal(M,eigenpy.reflex33(M,verbose)) );
 
-if verbose: print "===> Block Vector 0:3x0:6:2 T"
+if verbose: print("===> Block Vector 0:3x0:6:2 T")
 M = Mref[0:3,0:6].T
 try:
     assert( np.array_equal(M,eigenpy.reflex33(M,verbose)) );
-except eigenpy.Exception, e:
-    if verbose: print "As expected, got the following /ROW/ error:", e.message
+except eigenpy.Exception as e:
+    if verbose: print("As expected, got the following /ROW/ error:", e.message)
 
-if verbose: print "===> From Py to Eigen::Vector3d"
-if verbose: print "===> From Py to Eigen::Vector3d"
-if verbose: print "===> From Py to Eigen::Vector3d"
+if verbose: print("===> From Py to Eigen::Vector3d")
+if verbose: print("===> From Py to Eigen::Vector3d")
+if verbose: print("===> From Py to Eigen::Vector3d")
 
 M = Mref[0:3,1:2]
 assert( np.array_equal(M,eigenpy.reflex3(M,verbose)) );

unittest/python/test_geometry.py

+from __future__ import print_function
+
 from geometry import *
 import numpy as np
 from numpy import cos,sin
@@ -33,13 +35,13 @@ assert(isapprox(q.coeffs(),qR.coeffs()))
 assert(isapprox(qR[3],1./np.sqrt(30)))
 try:
    qR[5]
-   print "Error, this message should not appear."
-except Exception,e:
-  if verbose: print "As expected, catched exception: ",e.message
+   print("Error, this message should not appear.")
+except Exception as e:
+  if verbose: print("As expected, catched exception: ",e.message)
 
 # --- Angle Vector ------------------------------------------------
 r = AngleAxis(.1,np.array([1,0,0],np.double))
-if verbose: print "Rx(.1) = \n\n",r.matrix(),"\n"
+if verbose: print("Rx(.1) = \n\n",r.matrix(),"\n")
 assert( isapprox(r.matrix()[2,2],cos(r.angle)))
 assert( isapprox(r.axis,np.matrix("1;0;0")) )
 assert( isapprox(r.angle,0.1) )
@@ -66,6 +68,6 @@ res = testInQuaternion_fx(q)
 assert(q.norm() == res)
 try:
     testInQuaternion(q)
-    print "Error, this message should not appear."
+    print("Error, this message should not appear.")
 except:
-    if verbose: print "As expected, catch a Boost::python::ArgError exception."
+    if verbose: print("As expected, catch a Boost::python::ArgError exception.")