Episode #77: You Don't Have To Be a Workaholic To Win
Published Sat, May 12, 2018, recorded Sat, May 12, 2018.
Brian #1: Why Senior Devs Write Dumb Code
- “Any fool can write code that a computer can understand. Good programmers write code that humans can understand.” - Kent Beck
- Code that is clean, straightforward, obvious, and easy to read actually takes practice to achieve.
- Follow principles like YAGNI, Singe Responsibility, DRY, etc.
- Avoid clever one-liners, weird abstractions.
- Esoteric language features.
- Code needs to be readable and easily understood while under time and stress pressure.
Michael #2: GeoAlchemy 2
- GeoAlchemy 2 provides extensions to SQLAlchemy for working with spatial databases.
- GeoAlchemy 2 focuses on PostGIS. Aims to be simpler than its predecessor, GeoAlchemy.
- Using it:
- Connect (e.g. Postgres)
- Declare a Mapping
class Lake(Base): __tablename__ = 'lake' id = Column(Integer, primary_key=True) name = Column(String) geom = Column(Geometry('POLYGON'))
- Create a table (via the engine)
- Create an Instance of the Mapped Class
- Inserts like standard SQLAlchmey
- Spatial Query
from sqlalchemy import func query = session.query(Lake).filter( func.ST_Contains(Lake.geom, 'POINT(4 1)')) query = session.query(Lake.name, Lake.geom.ST_Buffer(2).ST_Area().label('bufferarea'))
Brian #3: QtPyConvert
- An automatic Python Qt binding transpiler to the Qt.py abstraction layer.
- QtPyConvert supports the following bindings out of the box:
- Conversions leave code comments in place, with the help of RedBaron
- Converts to Qt.py
- Minimal Python 2 & 3 shim around all Qt bindings - PySide, PySide2, PyQt4 and PyQt5
- Do we have to kill ourselves to get ahead?
- Don’t busy-brag
- Max Q analogy
- The tips
- Institutional Knowledge
Brian #5: RedBaron
- RedBaron is a python library to make the process of writing code that modify source code as easy and as simple as possible.
- writing custom refactoring, generic refactoring, tools,
- Used by QtPyConvert to achieve the conversion while leaving code comments in place
- Uses the full syntax tree, FST. Like an AST, but keeps all information, including comments and formatting.
- possible uses:
- rename a variable in a source file... without clashing with things that are not a variable (example: stuff inside a string)
- inline a function/method
- extract a function/method from a series of line of code
- split a class into several classes
- split a file into several modules
- convert your whole code base from one ORM to another
- do custom refactoring operation not implemented by IDE
Michael #6: Project Beeware AppStore
- Project BeeWare has just released its first iPhone app made in Python using its Briefcase tool.
- Simple travel app for currency and tip calculations
- Briefcase: A distutils extension to assist in packaging Python projects as standalone applications.
Briefcase is a tool for converting a Python project into a standalone native application. You can package projects for:
- While there are other Python GUI toolkits aiming to enable Python developers to build and deploy iOS apps, like for instance the very nice Pythonista app, the BeeWare project is a bit different because it aims at cross-platform compatibility and native widgets with a set of different tools, like Briefcase and Toga.
- Michael: Extra ssh breach Did you see that? https://www.reddit.com/r/Python/comments/8hvzja/backdoor_in_sshdecorator_package/
- PyCon videos already up at https://www.youtube.com/pycon2018