CPython Alternatives

CPython reviews and mentions

• What's New in Python 3.15
  1 project | news.ycombinator.com | 21 Dec 2025

  Here's the relevant diff: https://github.com/python/cpython/pull/137968/files#diff-966...

  Search is limited to 20 attributes and non-descriptors only to avoid arbitrary code execution.

  I assume constructing AttributeErrors isn't highly performance sensitive.

• Ask HN: How do you handle release notes for multiple audiences?
  3 projects | news.ycombinator.com | 13 Dec 2025

  If there is an audience for release notes I haven't seen anything better than just committing entries to pre-release folder as you change things and have release automation compile the folder into the actual release notes. Python and many other large projects handle it like this: https://github.com/python/cpython/tree/main/Misc/NEWS.d/next (The release notes for major releases are crafted manually)

• Guide - Audio Modding of "Arena of Valor"
  6 projects | dev.to | 5 Dec 2025

  Python Software Foundation. Python Programming Language. https://www.python.org/

• How to Send an Email in Python
  1 project | dev.to | 4 Dec 2025

  import smtplib from email.mime.text import MIMEText from email.mime.multipart import MIMEMultipart from email.mime.base import MIMEBase from email import encoders # SMTP Server details port = 587 smtp_server = "smtp.sendlayer.net" username = "paulie" # Your username generated by SendLayer password = "sendlayer_smtp_password" # Your password generated by SendLayer sender_email = "paulie@example.com" receiver_email = "johndoe@example.com" # Email content subject = "Email Example with Attachment" html_message = """\ Hi, This is a test email sent from "https://www.python.org">Python using "https://sendlayer.com">SendLayer's SMTP server The email also includes an attachment """ # Create a multipart message and set headers message = MIMEMultipart() message["From"] = sender_email message["Subject"] = subject message["To"] = receiver_email # Attach the HTML part message.attach(MIMEText(html_message, "html")) # Specify the file path for the attachment filename = "./path/to/attachment/file.pdf" # Change this to the correct path # Open the file in binary mode with open(filename, "rb") as attachment: part = MIMEBase("application", "octet-stream") part.set_payload(attachment.read()) # Encode file in ASCII characters to send by email encoders.encode_base64(part) # Add header as key/value pair to attachment part part.add_header("Content-Disposition", f"attachment; filename= {filename}") # Add attachment to message message.attach(part) # Send the email with smtplib.SMTP(smtp_server, port) as server: server.starttls() server.login(username, password) server.sendmail(sender_email, receiver_email, message.as_string()) print('Email sent successfully')

• Python Concurrency: A Guide to Threads, Processes, and Asyncio
  3 projects | dev.to | 25 Nov 2025

  import requests from concurrent.futures import ThreadPoolExecutor URLS = [ "https://www.python.org/", "https://www.djangoproject.com/", "https://flask.palletsprojects.com/", ] def fetch_url(url: str): print(f"Fetching {url}...") response = requests.get(url) print(f"Fetched {url} with status {response.status_code}") return len(response.content) with ThreadPoolExecutor(max_workers=5) as executor: # The map function runs `fetch_url` for each item in URLS results = executor.map(fetch_url, URLS) for url, length in zip(URLS, results): print(f"URL: {url}, Length: {length}")

• Type hints in Python (4)
  2 projects | dev.to | 25 Nov 2025

  Use KeysView and ValuesView instead of dict_keys and dict_values respectively because type checkers don't support dict_keys and dict_values in _collections_abc.

• Optimize Python Sorting with One Little Trick
  1 project | dev.to | 19 Nov 2025

  According to the benchmark in the PR that introduced this optimization, sorting a list that consists only of floats rather than a list of floats with even a single integer at the end is almost twice as fast.

• How to Use UUIDv7 in Python, Django and PostgreSQL
  1 project | news.ycombinator.com | 15 Nov 2025

  If you want to a UUIDv7 key for partitioning your table by date (e.g., one partition per day or month), you need to be able to compute the partition range via the minimal UUIDv7 for a given date.

  There is some discussion whether or not to add helpers for this to Python‘s uuid7 module: https://github.com/python/cpython/issues/130843#issuecomment...

• How often does Python allocate?
  4 projects | news.ycombinator.com | 1 Nov 2025

  With respect to tagged pointers, there seems to be some recent movements on that front in CPython: https://github.com/python/cpython/issues/132509

• Python: Is_dir() returns False when called from a path.relative_to(root) result
  1 project | news.ycombinator.com | 25 Oct 2025
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