Update documentation with supported Python version (3.6+) (#4636)

Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

README.md

@@ -5,10 +5,8 @@ ensuring you have the right stack everywhere.
 
 ![Poetry Install](https://raw.githubusercontent.com/python-poetry/poetry/master/assets/install.gif)
 
-It supports Python 2.7 and 3.5+.
+It supports Python 3.6+.
 
-**Note**: Python 2.7 and 3.5 will no longer be supported in the next feature release (1.2).
-You should consider updating your Python version to a supported one.
 
 [![Tests Status](https://github.com/python-poetry/poetry/workflows/Tests/badge.svg?branch=master&event=push)](https://github.com/python-poetry/poetry/actions?query=workflow%3ATests+branch%3Amaster+event%3Apush)
 

docs/_index.md

@@ -17,13 +17,9 @@ It allows you to declare the libraries your project depends on and it will manag
 
 ## System requirements
 
-Poetry requires Python 2.7 or 3.5+. It is multi-platform and the goal is to make it work equally well
+Poetry requires Python 3.6+. It is multi-platform and the goal is to make it work equally well
 on Windows, Linux and OSX.
 
-{{% note %}}
-Python 2.7 and 3.5 will no longer be supported in the next feature release (1.2).
-You should consider updating your Python version to a supported one.
-{{% /note %}}
 
 ## Installation
 

docs/configuration.md

@@ -123,11 +123,6 @@ Defaults to one of the following directories:
 Use parallel execution when using the new (`>=1.1.0`) installer.
 Defaults to `true`.
 
-{{% note %}}
-This configuration will be ignored, and parallel execution disabled when running
-Python 2.7 under Windows.
-{{% /note %}}
-
 ### `virtualenvs.create`
 
 **Type**: boolean

docs/managing-environments.md

@@ -30,12 +30,12 @@ to activate one explicitly, see [Switching environments](#switching-between-envi
 To easily switch between Python versions, it is recommended to
 use [pyenv](https://github.com/pyenv/pyenv) or similar tools.
 
-For instance, if your project is Python 3.6 only, a standard workflow
-would be:
+For instance, if your project requires a newer Python than is available with
+your system, a standard workflow would be:
 
 ```bash
-pyenv install 3.6.15
-pyenv local 3.6.15  # Activate Python 3.6 for the current project
+pyenv install 3.9.8
+pyenv local 3.9.8  # Activate Python 3.9 for the current project
 poetry install
 ```
 {{% /note %}}