Python 3.13 Release Notes 2025 Jun 2026

The asyncio library has received a major overhaul, introducing a new, more efficient event loop implementation. This results in better performance and responsiveness for asynchronous applications.

NameError: name 'pandas' is not defined. Did you forget: `import pandas`? python 3.13 release notes 2025

Following PEP 594 , Python 3.13 removes many legacy, deprecated, and unused standard library modules (like telnetlib and cgi ). The asyncio library has received a major overhaul,

Note: Python 3.13.0 has been superseded by Python 3.13.13. Release date: Oct. 7, 2024. Python documentation Did you forget: `import pandas`

Python 3.13 isn't just an update; it's a pivot toward a multi-core, high-performance future.

The most transformative feature in Python 3.13 is the experimental support for running without the . This enables true parallelism, allowing multiple threads to execute Python bytecode simultaneously on different CPU cores. Python.org Python Release Python 3.13.0

Based on the current release schedule for Python, , not 2025. (Python 3.14 is the version scheduled for 2025).