Remove hard-coded python3.6 references

.scrutinizer.yml

@@ -8,7 +8,7 @@ filter:
         - 'kytos/web-ui/*'
 build:
     environment:
-        python: 3.6.3
+        python: 3.6
         postgresql: false
         redis: false
     dependencies:

README.rst

@@ -38,11 +38,12 @@ Just install docker from your package provider and run:
 Installing
 ==========
 
-We use Python 3.6, so you'll have to install it into your environment beforehand:
+If you don't have Python 3 installed, please install it. Please make
+sure that you're using ``python3.6`` or a later version:
 
 .. code-block:: shell
 
-   $ apt-get install python3.6
+   $ apt install python3
 
 Then, the first step is to clone *kytos* repository:
 
@@ -56,7 +57,7 @@ install procedure:
 .. code-block:: shell
 
    $ cd kytos
-   $ sudo python3.6 setup.py install
+   $ sudo python3 setup.py install
 
 Configuring
 ===========

bin/kytosd

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.6
+#!/usr/bin/env python3
 """Start Kytos SDN Platform core."""
 
 from kytos.core import kytosd

docs/admin/installing.rst

@@ -5,8 +5,8 @@ Installing
 Installing required dependencies
 ================================
 
-We use Python 3.6, so in order to use this software please install it
-into your environment beforehand. Note that an additional step is
+Kytos requires at least Python 3.6, so in order to use this software please 
+install it into your environment beforehand. Note that an additional step is 
 needed for Ubuntu releases older than 16.10.
 
 
@@ -20,15 +20,16 @@ install Python 3.6 packages. To add this PPA, use the commands:
 
   $ sudo add-apt-repository ppa:jonathonf/python-3.6
   $ sudo apt update
+  $ sudo apt install python-pip python3.6
 
 Required packages
 =================
 
-The required Ubuntu packages can be installed by:
+The required Debian/Ubuntu packages can be installed by:
 
 .. code-block:: bash
 
-  $ sudo apt install python-pip python3.6
+  $ sudo apt install python3-pip python3
 
 Installing with pip
 ===================
@@ -38,7 +39,7 @@ previous steps, then:
 
 .. code-block:: bash
 
-  $ pip install kytos kytos-utils
+  $ pip3 install kytos kytos-utils
 
 This will install the Kytos server and client, and also their dependencies,
 like the python-openflow library.

docs/developer/hacking.rst

@@ -50,19 +50,18 @@ html_cov/index.html``).
 Pyenv
 =====
 
-Some distributions do not provide all python releases, specially the most
-recent ones such as ``>= 3.6``. The easiest *pythonic* way to setup your python
-environment with the correct python version and its dependencies is to use
-|pyenv|_ and |venv|_. So, here we will guide you on how to install those tools
-and use them.
+Some distributions do not provide all Python releases. The easiest *pythonic*
+way to setup your Python environment with the correct version and its
+dependencies is to use |pyenv|_ and |venv|_. So, here we will guide you on how
+to install those tools and use them.
 
 The following steps are focusing on Debian-Like systems, so some tweaks may be
-necessary for other distro based systems.
+necessary for other Linux distributions.
 
 On the end of this chapter there are also other reference links for you to
-better understand this projects and tools.
+better understand this project and its tools.
 
-.. note:: If you already have python 3.6 installed, you do not need to follow
+.. note:: If you already have Python 3.6+ installed, you do not need to follow
   this chapter. In such cases you can go straightforward to our
   :doc:`tutorial:napps/development_environment_setup` tutorial.
 
@@ -96,7 +95,7 @@ Now, to activate the environment you just need to run: ``pyenv activate kytos``
 Long version
 ------------
 
-Now the detailed/explained version.
+Now the detailed version.
 
 |pyenv_cbp|_ also recommends you to install some system tools to be able to
 build python versions (we have added git to that list):
@@ -150,18 +149,18 @@ Now you have |pyenv|_ and |pyenv_venv|_ tools available to be used on your shell
     installed it, you may need to run the commands on the shell or source your
     .bashrc file.
 
-Install python specific version
+Install specific Python version
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-To install a specific version of python, such as 3.6.2, you just neeed to run:
+To install a specific version of Python, such as 3.6.2, you just need to run:
 
 .. code:: bash
 
   $ pyenv install 3.6.2
 
-Python community considers a best practice to use "virtual environments"
+The Python community considers a best practice to use "virtual environments"
 |venv|_ in order to avoid conflict between python dependencies among multiple
-projects, and even project and system python libraries. So, you may want to
+projects, and even project and system Python libraries. So, you may want to
 create a |venv|_ for kytos by doing:
 
 .. code:: bash

docs/developer/setup_develop_environment.rst

@@ -9,20 +9,8 @@ locally.
 System Requirements
 ===================
 
-Before create your development environment you need install some libraries to
-support run `Python 3.6` packages and `git` commands.
-
-Ubuntu Old releases
--------------------
-
-If are you using an Ubuntu version less than 17.10 you need to add a PPA to
-able to install Python 3.6 packages. This step is made running the command
-below.
-
-.. code-block:: shell
-
-  $ sudo add-apt-repository ppa:jonathonf/python-3.6
-  $ sudo apt update
+Before creating your development environment you need to install some libraries
+to support running `Python 3` packages and `git` commands.
 
 
 Installing the required packages
@@ -33,7 +21,7 @@ command below.
 
 .. code-block:: shell
 
-  $ sudo apt install git libpython3.6-dev python3.6 python3-venv
+  $ apt install git python3 python3-venv libpython3-dev
 
 
 Setup a Virtual Environment
@@ -56,7 +44,7 @@ To create a new virtual environment named `kytos-environment` you will run:
 
 .. code-block:: shell
 
-  $ python3.6 -m venv kytos-environment
+  $ python3 -m venv kytos-environment
 
 After ran the command above a new folder named `kytos-environment` will be
 created.
@@ -97,29 +85,30 @@ If you want to remove an existing virtualenv, just delete its folder
 
 .. code-block:: shell
 
-  $ rm -rf kytos-environment
+  $ rm -vrf kytos-environment
 
 
 Installing from Source
 ======================
 
-To install the kytos from source you need follow the below steps.
+To install kytos from source you need to follow the steps below.
 
 
 Update the virtualenv
 ---------------------
 
-First of all activate the virtual environment and update the pip package that
+First activate the virtual environment and update the pip package that
 is already installed in the virtualenv, with setuptools and wheel.
 
 .. code-block:: shell
 
     (kytos-environment) $ pip install --upgrade pip setuptools wheel
 
-Download the kytos project from github
+Download the Kytos project from github
 --------------------------------------
 
-First, you need to run the commands below to clone the python-openflow, kytos-utils and kytos projects locally. 
+Run the commands below to clone the python-openflow, kytos-utils and kytos
+projects locally. 
 
 .. code-block:: shell
 

kytos/core/kytosd.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.6
+#!/usr/bin/env python3
 """Start Kytos SDN Platform core."""
 import asyncio
 import functools

tests/unit/test_core/test_logs.py

@@ -161,8 +161,7 @@ def test_handler_filter(self):
         LogManager.add_handler(handler)
 
         # Message based on the log output that ends with traceback plaintext as
-        # seen in lib/python3.6/site-packages/werkzeug/serving.py:225 of
-        # Werkzeug==0.12.1
+        # seen in site-packages/werkzeug/serving.py:225 of Werkzeug==0.12.1
         msg = "lorem ipsum KeyError: 'Session is disconnected'"
         logger = logging.getLogger('werkzeug')
         logger.setLevel(logging.ERROR)
@@ -178,8 +177,7 @@ def test_old_handler_filter():
         already existed before importing the "logs" module.
 
         Message based on the log output that ends with traceback plaintext as
-        seen in lib/python3.6/site-packages/werkzeug/serving.py:225 of
-        Werkzeug==0.12.1:
+        seen in site-packages/werkzeug/serving.py:225 of Werkzeug==0.12.1:
 
             - logger name: werkzeug
             - level: ERROR

tox.ini

@@ -1,6 +1,5 @@
 [tox]
-#envlist = py36,py37
-envlist = py36
+#envlist = py36,py38
 
 [testenv]
 whitelist_externals=