tirkarthi

$ rg -t py ' _fields ='      # command         
pytablewriter/pytablewriter/_typing.py
1602:            _fields = kwargs

flake8-rst-docstrings/flake8_rst_docstrings.py
345:    _fields = (
394:    _fields = (
507:    _fields = "name arguments".split()
588:    _fields = "kind value start end source".split()

tirkarthi

marp
true

Python best practices

Karthikeyan Singaravelan /(Software Engineer at Platform Portal | Python core developer)/

---

tirkarthi

# python -m pip install dash-cytoscape==0.0.5
import dash
import dash_cytoscape as cyto
import dash_html_components as html
import dash_core_components as dcc
from pprint import pprint
from dash.dependencies import Input, Output, State

app = dash.Dash(__name__)

tirkarthi

marp
true

CPython development

Karthikeyan Singaravelan (Senior Software Engineer at Visa | Python core developer)

---

tirkarthi

Do take one issue per person to help others :) Also checkout Fedora tracker for more easy issues : https://bugzilla.redhat.com/show_bug.cgi?id=1785415 . I tried to mark the issues complete but it's more maintenance so sorry if the issue is fixed or already has a PR and is not updated here.

• SyntaxWarning in Python 3.8 over literal comparison
• time.clock removal in Python 3.8
• DeprecationWarning due to invalid escape sequences
• cgi.escape was removed in Python 3.8
• Importing ABC from collections module was removed in Python 3.9
• SyntaxWarning in Python 3.8 tests due to using is to compare literals.
• [Importing ABC from collections module is removed in Python 3.9](https://github.com/benoitc/http

tirkarthi

import calendar
from collections import Counter
import datetime
import gzip
import os
from urllib.request import urlretrieve
from urllib.error import HTTPError

import matplotlib.pylab as plt

tirkarthi

import ast
from _ast import *

def dump(node, annotate_fields=True, include_attributes=False, indent=None):

    def _format(node, level=0):
        if indent is not None:
            level += 1
            prefix = '\n' + indent * level
            sep = ',\n' + indent * level

tirkarthi

(defun python-bugs-url ()
  (interactive)
  (let ((commit-message (magit-rev-format "%B"
	 				  (magit-rev-parse
	 				   (magit-branch-or-commit-at-point))))
	(bugs-base-url "https://bugs.python.org/issue")
	(pr-base-url "https://github.com/python/cpython/pull/")
	(bugs-pr-regex "bpo-\\([0-9]+\\).*\\(GH-\\|#\\)\\([0-9]+\\)"))
    (when (string-match bugs-pr-regex commit-message)
      (let ((bug-url (concat bugs-base-url (match-string 1 commit-message)))

tirkarthi

# Empty headers in HTTP/2 streams can cause DoS. A test based on http://hg.nginx.org/nginx-tests .
# Takes around 8 seconds without the patch at https://github.com/nginx/nginx/commit/6dfbc8b1c2116f362bb871efebbf9df576738e89
# Start 2019-08-14 1565776248
# End 2019-08-14 1565776256
# https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/

use POSIX qw/strftime/;
print "Start ", strftime('%Y-%m-%d %s',localtime), " \n";

$s = Test::Nginx::HTTP2->new();

tirkarthi

.. bpo: 34970
.. date: 2018-10-13-11-14-13
.. nonce: SrJTY7
.. release date: 2018-10-20
.. section: Library

Protect tasks weak set manipulation in ``asyncio.all_tasks()``
.. bpo: 17239
.. date: 2018-09-11-18-30-55
.. nonce: kOpwK2