DmitrySoshnikov

# "Understanding Python's closures".
#
# Tested in Python 3.1.2
#
# General points:
#
#    1. Closured lexical environments are stored
#       in the property __closure__ of a function
#
#    2. If a function does not use free variables

pazdera

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Example of Singleton design pattern
# Copyright (C) 2011 Radek Pazdera

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

olomix

#!/usr/bin/env python2.7

import random
import subprocess


class Node(object):
    def __init__(self, key, value):
        self.key = key
        self.value = value

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

elliottb

from fabric.api import local, run, env, put
import os, time

# remote ssh credentials
env.hosts = ['10.1.1.25']
env.user = 'deploy'
env.password = 'XXXXXXXX' #ssh password for user
# or, specify path to server public key here:
# env.key_filename = ''

floer32

# based on: http://stackoverflow.com/questions/1015307/python-bind-an-unbound-method#comment8431145_1015405
def bind(instance, func, as_name):
    """ Turn a function to a bound method on an instance

    .. doctest::

        >>> class Foo(object):
        ...     def __init__(self, x, y):
        ...         self.x = x
        ...         self.y = y

physacco

Python 3 extension example

Build

python3 setup.py build

Output: build/lib.macosx-10.11-x86_64-3.5/hello.cpython-35m-darwin.so

Run

dnozay

Copyright (c) Django Software Foundation and individual contributors.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright

uranusjr

pip 即將更新依賴解析器（dependency resolver）

Partially translated from: https://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html

去年的 PSF 發文中提到，pip 的開發團隊正在為 pip 實作一個新的解析器（resolver）。我們計畫在今年把它釋出。

會有什麼改變

解析器的最重要改變會包括：