pykong

import shlex
from dataclasses import dataclass
from pathlib import Path
from subprocess import check_call
from typing import Final, Optional, Sequence

IMG_EXTS: Final[Sequence[str]] = (
    ".png",
    ".jpg",
    ".svg",

pykong

Transforming Code into Beautiful, Idiomatic Python 3

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Adapted from Alen K's original transcript to Python 3.6+ syntax by myself.

Looping over a range of numbers

pykong

[Nemo Action]
Name=Open in Sublime Merge
Comment=Open in Sublime Merge
Exec=/opt/sublime_merge/sublime_merge -n %F
Icon-Name=sublime-merge
Selection=any
Extensions=dir
Quote=double

pykong

[Nemo Action]
Name=Open in Sublime Text 3
Comment=Open in Sublime Text 3
Exec=subl -n %F
Icon-Name=sublime-text
Selection=any
Extensions=dir
Quote=double
Mimetypes=text/plain
Dependencies=subl

pykong

public class User
{
    public string Name  { get; set; }
    public string Email  { get; set; }
    public int Age  { get; set; }
    public DateTime CreatedAt  { get; set; }
}

// creating one fake user
var user = new Faker<User>().Create();

pykong

// create new object
contact_existing = Mapper.Map<ContactDTO, Contact>(contact_dto);

// update existing object
contact_existing = Mapper.Map<ContactDTO, Contact>(contact_dto, contact_existing);

pykong

public async Task DoWithRetryAsync(Func<Task> action, TimeSpan sleepPeriod, int tryCount = 3)
{
    if (tryCount <= 0)
        throw new ArgumentOutOfRangeException(nameof(tryCount));

    while (true) {
        try {
            await action();
            return; // success!
        } catch {

pykong

arr = [
        {"x":"8/11/2009","y":0.026572007},
        {"x":"8/12/2009","y":0.025057454},
        {"x":"8/13/2009","y":0.024530916},
        {"x":"8/14/2009","y":0.031004457}
      ]

Math.max.apply(Math, arr.map(function(o) {return o.y;}))

pykong

System.Diagnostics.Debug.WriteLine("_exchangeEmitter.Start(args);");

pykong

internal static class MailExtractor
{
    public static List<string> ExtractEmails(string data)
    {
        List<string> ExtractedEmailAddresses = new List<string>();

        //instantiate with this pattern
        string EmailPattern = @"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
        Regex emailRegex = new Regex(EmailPattern, RegexOptions.IgnoreCase);
        //find items that matches with our pattern