Add 'PYGUIDE.md'

PYGUIDE.md

@@ -0,0 +1,22 @@
+# Cerc Python Style Guide
+## What's coding style and why it matters
+
+Coding style is just how the code looks, it's incredibly personal, and everyone has their style. 
+
+Your preferred architectures, variable and function naming style all of then impacts in your code style and how the others read and understand it, so it could become a significant burden if everyone is coding on his own.
+
+At CERC we are following the [PEP8](https://www.python.org/dev/peps/pep-0008/) with two spaces indentation instead of four.
+
+## Tools.
+
+We use [PyCharm](https://www.jetbrains.com/pycharm/) as an integrated development environment and follow the tool's overall advice but the space indentation, which we set to two spaces instead of default four spaces.
+
+For code analysis, we enforce the usage of [pylint](https://www.pylint.org/) with our own [custom style definition](pylintrc)
+
+## Naming convention
+
+* Name your folders and files in lowercase.
+* Your class names must start in capital letters and follow the python CapWords pattern. 
+* Methods and properties that return lists must end in "s".
+* Constants names must be all capitals.
+* Avoid the usage of "get_" and "set_" methods whenever possible, by using @property and @variable.setter decorators instead.