@@ -76,6 +76,27 @@ function get_python_versions_for_package {

         | grep 'Language' | cut -f5 -d: | grep '\.' | tr '\n' ' '

 }

+# Check for python3 classifier in local directory

+function check_python3_support_for_package_local {

+    local name=$1

+    cd $name

+    set +e

+    classifier=$(python setup.py --classifiers \

+        | grep 'Programming Language :: Python :: 3$')

+    set -e

+    echo $classifier

+}

+

+# Check for python3 classifier on pypi

+function check_python3_support_for_package_remote {

+    local name=$1

+    set +e

+    classifier=$(curl -s -L "https://pypi.python.org/pypi/$name/json" \

+        | grep '"Programming Language :: Python :: 3"')

+    set -e

+    echo $classifier

+}

+

 # Wrapper for ``pip install`` to set cache and proxy environment variables

 # Uses globals ``OFFLINE``, ``PIP_VIRTUAL_ENV``,

 # ``PIP_UPGRADE``, ``TRACK_DEPENDS``, ``*_proxy``,

@@ -123,9 +144,39 @@ function pip_install {

                 # default pip

                 local package_dir=${!#}

                 local python_versions

-                if [[ -d "$package_dir" ]]; then

+

+                # Special case some services that have experimental

+                # support for python3 in progress, but don't claim support

+                # in their classifier

+                echo "Check python version for : $package_dir"

+                if [[ ${package_dir##*/} == "nova" || ${package_dir##*/} == "glance" || ${package_dir##*/} == "cinder" ]]; then

+                    echo "Using $PYTHON3_VERSION version to install $package_dir"

+                    sudo_pip="$sudo_pip LC_ALL=en_US.UTF-8"

+                    cmd_pip=$(get_pip_command $PYTHON3_VERSION)

+                elif [[ -d "$package_dir" ]]; then

                     python_versions=$(get_python_versions_for_package $package_dir)

                     if [[ $python_versions =~ $PYTHON3_VERSION ]]; then

+                        echo "Using $PYTHON3_VERSION version to install $package_dir"

+                        sudo_pip="$sudo_pip LC_ALL=en_US.UTF-8"

+                        cmd_pip=$(get_pip_command $PYTHON3_VERSION)

+                    else

+                        # The package may not have yet advertised python3.5

+                        # support so check for just python3 classifier and log

+                        # a warning.

+                        python3_classifier=$(check_python3_support_for_package_local $package_dir)

+                        if [[ ! -z "$python3_classifier" ]]; then

+                            echo "Using $PYTHON3_VERSION version to install $package_dir"

+                            sudo_pip="$sudo_pip LC_ALL=en_US.UTF-8"

+                            cmd_pip=$(get_pip_command $PYTHON3_VERSION)

+                        fi

+                    fi

+                else

+                    # Check pypi as we don't have the package on disk

+                    package=$(echo $package_dir | grep -o '^[.a-zA-Z0-9_-]*')

+                    python3_classifier=$(check_python3_support_for_package_remote $package)

+                    if [[ ! -z "$python3_classifier" ]]; then

+                        echo "Using $PYTHON3_VERSION version to install $package"

+                        sudo_pip="$sudo_pip LC_ALL=en_US.UTF-8"

                         cmd_pip=$(get_pip_command $PYTHON3_VERSION)

                     fi

                 fi

@@ -71,7 +71,15 @@ function install_apache_wsgi {

     # Apache installation, because we mark it NOPRIME

     if is_ubuntu; then

         # Install apache2, which is NOPRIME'd

-        install_package apache2 libapache2-mod-wsgi

+        install_package apache2

+        if python3_enabled; then

+            if is_package_installed libapache2-mod-wsgi; then

+                uninstall_package libapache2-mod-wsgi

+            fi

+            install_package libapache2-mod-wsgi-py3

+        else

+            install_package libapache2-mod-wsgi

+        fi

     elif is_fedora; then

         sudo rm -f /etc/httpd/conf.d/000-*

         install_package httpd mod_wsgi

@@ -81,7 +81,11 @@ function configure_horizon {

     # Horizon is installed as develop mode, so we can compile here.

     # Message catalog compilation is handled by Django admin script,

     # so compiling them after the installation avoids Django installation twice.

-    (cd $HORIZON_DIR; python manage.py compilemessages)

+    if python3_enabled; then

+        (cd $HORIZON_DIR; python${PYTHON3_VERSION} manage.py compilemessages)

+    else

+        (cd $HORIZON_DIR; python manage.py compilemessages)

+    fi

     # ``local_settings.py`` is used to override horizon default settings.

     local local_settings=$HORIZON_DIR/openstack_dashboard/local/local_settings.py

@@ -162,7 +166,11 @@ function install_django_openstack_auth {

         git_clone_by_name "django_openstack_auth"

         # Compile message catalogs before installation

         _prepare_message_catalog_compilation

-        (cd $dir; python setup.py compile_catalog)

+        if python3_enabled; then

+            (cd $dir; python${PYTHON3_VERSION} setup.py compile_catalog)

+        else

+            (cd $dir; python setup.py compile_catalog)

+        fi

         setup_dev_lib "django_openstack_auth"

     fi

     # if we aren't using this library from git, then we just let it

@@ -101,12 +101,12 @@ if [[ -r $RC_DIR/.localrc.password ]]; then

 fi

 # Control whether Python 3 should be used.

-export USE_PYTHON3=${USE_PYTHON3:-False}

+export USE_PYTHON3=$(trueorfalse False USE_PYTHON3)

 # When Python 3 is supported by an application, adding the specific

 # version of Python 3 to this variable will install the app using that

 # version of the interpreter instead of 2.7.

-export PYTHON3_VERSION=${PYTHON3_VERSION:-3.4}

+export PYTHON3_VERSION=${PYTHON3_VERSION:-3.5}

 # Just to be more explicit on the Python 2 version to use.

 export PYTHON2_VERSION=${PYTHON2_VERSION:-2.7}