Role to install python 3 > 3.4 on Ubuntu 14.04.

python3-env/defaults/main.yml

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+---
+py3_env_install: False
+py3_ppa: 'ppa:deadsnakes/ppa'
+py3_env_version: 3.6
+py3_env_pkgs_state: present
+py3_env_site: False
+
+py3_env_basic_pkgs:
+  - python-pip
+
+py3_env_dpkg:
+  - 'python{{ py3_env_version }}'
+  - 'python{{ py3_env_version }}-venv'
+  - 'python{{ py3_env_version }}-dev'

python3-env/tasks/main.yml

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+---
+- block:
+  - name: Install the python 3 ppa repository
+    apt_repository: repo={{ py3_ppa }} update_cache=yes state=present
+
+  - name: Install the python3 deb packages
+    apt: name={{ py3_env_dpkg }} state={{ py_env_pkgs_state }} update_cache=yes cache_valid_time=600
+
+  - name: Install the correct pip3 version
+    shell: python{{ py3_env_version }} -m ensurepip && pip{{ py3_env_version }} install --upgrade pip setuptools wheel
+
+  - name: Install a list of pip packages
+    pip: executable=pip{{ py3_env_version }} name={{ py3_env_pip_pkgs }} state=latest
+
+  - name: Install a list of versioned pip packages
+    pip: executable=pip{{ py3_env_version }} name={{ item.pkg }} version={{ item.version }}
+    with_items: '{{ py3_env_versioned_pip_pkgs | default ([]) }}'
+
+  when:
+    - py3_env_install
+    - is_trusty
+  tags: [ "python", "py3_env", "py3_env_pkgs", 'python3' ]
+