Jan 15, 2015 Tag: Python
Looking for Wisdom about Python¶
Ongoing attempt to collect links and documentation about TYPO3. New links will go here first and may later be outsourced into a separate post. Will be updated as needed.
Updated on Oct 30, 2018
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Advocating Python¶
- Why Python is a great first language: http://blog.trinket.io/why-python/
Application development¶
Kivy¶
Kivy - Open source Python library for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Not looking native.
Argument parsing¶
Kyle Purdon, realpython: Comparing Python Command-Line Parsing Libraries – Argparse, Docopt, and Click - plus: How to create entry-points for install routines
CLI and REST in one: Hug - embrace the APIs of the future
Drastically simplify API development over multiple interfaces. With hug, design and develop your API once, then expose it however your clients need to consume it. Be it locally, over HTTP, or through the command line - hug is the fastest and most modern way to create APIs on Python3.
Books¶
- The Hitchhiker’s Guide to Python (online)
Databases¶
MySQL¶
General
- https://www.startpage.com/do/dsearch?query=python+mysql
- https://dev.mysql.com/doc/connector-python/en/
- https://www.w3schools.com/python/python_mysql_getstarted.asp
pymysqldb
2018-09-21:
pipenv shell python3 -m pip install PyMySQL
DB-API 2.0: http://www.python.org/dev/peps/pep-0249MySQL Reference Manuals: http://dev.mysql.com/doc/MySQL client/server protocol: http://dev.mysql.com/doc/internals/en/client-server-protocol.htmlPyMySQL mailing list: https://groups.google.com/forum/#!forum/pymysql-users
Debugging¶
q - Quick and dirty debugging output for tired programmers¶
Module by Ka-Ping Yee at Github, lightning talk at PyCon US 2013:
pip install -U q
tail -f /tmp/q
Goodies¶
- A curated list of awesome Python frameworks, libraries and software
- Python Gems: Beautifully constructed python scripts
- http://www.whoishostingthis.com/resources/python/
Recommended Packages¶
- Creating Excel files with Python and XlsxWriter
- CSV handling: json to csv, excel to csv, ...
Guides¶
- 2018-07-04, Dan Bader: (4 ways of) Python String Formatting
Incoming¶
- Parsley is a pattern matching and parsing tool for Python programmers. https://pypi.python.org/pypi/Parsley
- Any elegant way to add a method to an existing object in python, Tweet by @raymondh
Jupyter¶
IPython¶
Getting Started with IPython Notebook Video - good!
The IPython Notebook Revolution Video - looks promising!
In my case:
#! /bin/bash # run-ipython-notebook.sh, mb, 2015-02-04, 2015-02-04 # to run this: ~/Apps/run-ipython-notebook.sh pushd $HOME/Apps >/dev/null ipython notebook --ipython-dir="${HOME}/IPython-Notebooks" & popd >/dev/null
Migration to Python 3¶
How Dropbox did it¶
- 2018-09-25, Max Bélanger and Damien DeVille: How we rolled out one of the largest Python 3 migrations ever
Natural Language Processing¶
- 2018-06-19, Dipanjan (DJ) Sarkar, Data Scientist: A Practitioner’s Guide to Natural Language Processing (Part I) — Processing & Understanding Text gProven and tested hands-on strategies to tackle NLP tasks
<<<<<<< Updated upstream <<<<<<< Updated upstream
>>>>>>> Stashed changes¶
>>>>>>> Stashed changes
Online Tools¶
Pythontutor: VISUALIZE the execution of Python, Java, JavaScript, and TypeScript code !!!
Online Python Tutor is a free educational tool created by Philip Guo !!! that helps students overcome a fundamental barrier to learning programming: understanding what happens as the computer executes each line of a program’s source code.
Using this tool, a teacher or student can write Python, Java, JavaScript, and TypeScript programs in the Web browser and visualize what the computer is doing step-by-step as it executes those programs.
Over one million people in over 165 countries have used Online Python Tutor to understand and debug their programs, often as a supplement to textbooks, lecture notes, and online programming tutorials.
PyPi Packaging and Publishing¶
Understand¶
- https://pypi.python.org/pypi - a short introductions
- Python Packaging User Guide
- https://wiki.python.org/moin/CheeseShopTutorial- old guide, unmaintained
Python Coding Style¶
Dan Bader about “The quest for the “definitive Python style guide”:
One of the things I like the most about Python is it’s high readability.
I strongly believe that “code is communication”
And just like there are generally accepted stylistic rules & guidelines for written communication in English, there are code style guides for writing Python. Sticking to these guidelines is one honking great idea. They make it easier for development teams to work together. And even if you’re working on a project by yourself, they’ll help you make changes in the future.
- PEP 8 – Style Guide for Python Code
- https://pep8.org/ - this website may be easier to read
- PEP 257 – Docstring Conventions
- Google Python Style Guide | Style guides for Google-originated open-source projects
- The Elements of Style, Strunk, W., Jr. and White, E.B.(PDF)
- The Elements of Python Style !!!
- Flake8 - Code Style Checker !!!
- Pocoo People Style Guide
- Dan Baders code reviews on YouTube
Python and other languages¶
Snippets¶
- getch(): Get a single char, not waiting anything else, tweet, by Facundo Batista saved locally as Python/Snippets/snippets-getch.py
SymPy¶
- SymPy: | home | docs | source | live |
- 2014-08-21, YouTube: SymPy - IPython Notebook Tutorial | material
- Lecture: Sympy - Symbolic algebra in Python
Solutions¶
Application layout¶
- 2018-06-04, Kyle Stratis: Python Application Layouts: A Reference (Dan Bader et. al.)
‘is last’ for iterator¶
James Bowman: http://www.excamera.com/sphinx/article-islast.html
islast: handling the last element of an iterator
Doing something special for the last element of an iterator is a fairly common pattern. I needed it for the Python Jtag tools, so made this small wrapper …
def islast(o): it = o.__iter__() e = it.next() while True: try: nxt = it.next() yield (False, e) e = nxt except StopIteration: yield (True, e) break # example # for i in islast(range(4)): print i
Testing¶
pytest¶
| docs | well written tutorial | blog post - with helpful pointers |
uWSGI¶
- Documentation: The uWSGI project
- YouTube: 2017, Philip James: Type UWSGI; Press Enter; What Happens?
Web Frameworks¶
-
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.
What’s new?¶
- 2018-06-27, Geir Arne Hjelle: Cool New Features in Python 3.7
2013¶
2014 PyCon¶
- Discovering Python by David Beazley, 23.04.2014. So, what happens when you lock a Python programmer in a secret vault containing 1.5 TBytes of C++ source code and no internet
- Python in the Browser: Intro to Brython by Susan Tan
2015 PyCon¶
- Python’s super() considered super!. Blogpost by Raymond Hettinger.
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