Versions:

  • 3.13.5
  • 3.13.4
  • 3.13.3
  • 3.13.2
  • 3.13.1
  • 3.13.0
  • 3.12.10
  • 3.12.9
  • 3.12.8
  • 3.12.7
  • 3.12.6
  • 3.12.5
  • 3.12.4
  • 3.12.3
  • 3.12.2
  • 3.12.1
  • 3.12.0
  • 3.11.9
  • 3.11.8
  • 3.11.7
  • 3.11.6
  • 3.11.5
  • 3.11.4
  • 3.11.3
  • 3.11.2
  • 3.11.1
  • 3.11.0
  • 3.10.11
  • 3.10.10
  • 3.10.9
  • 3.10.8
  • 3.10.7
  • 3.10.6
  • 3.10.5
  • 3.10.4
  • 3.10.3
  • 3.10.2
  • 3.10.1
  • 3.10.0
  • 3.9.13
  • 3.9.12
  • 3.9.11
  • 3.9.10
  • 3.9.9
  • 3.9.8
  • 3.9.7
  • 3.9.6
  • 3.9.5
  • 3.9.4
  • 3.9.3
  • 3.9.2
  • 3.9.1
  • 3.9.0
  • 3.8.10
  • 3.8.9
  • 3.8.8
  • 3.8.7
  • 3.8.6
  • 3.8.5
  • 3.8.4
  • 3.8.3
  • 3.8.2
  • 3.8.1
  • 3.8.0
  • 3.7.9
  • 3.7.8
  • 3.7.7
  • 3.7.6
  • 3.7.5
  • 3.7.4
  • 3.7.3
  • 3.7.2
  • 3.7.1
  • 3.7.0
  • 3.6.8
  • 3.6.7
  • 3.6.6
  • 3.6.5
  • 3.6.4
  • 3.6.3
  • 3.6.2
  • 3.6.1
  • 3.6.0
  • 3.5.4
  • 3.5.3
  • 3.5.2
  • 3.5.1
  • 3.5.0

Python Launcher is a lightweight system utility published by the Python Software Foundation that removes the guesswork from running Python on Windows machines. Installed automatically with every recent CPython release, the tool intercepts any script or interactive command that begins with the py token, reads the optional version directive on the shebang line (e.g. #!/usr/bin/env python3.11), and then launches the interpreter that best satisfies that request from the pool of versions present on the workstation. Because it consults a predictable search order—preferring user-level installations to all-user copies and ranking executables by language version instead of by last-modified date—the launcher guarantees that development, testing, and automation workflows always invoke the intended runtime even when PATH has been rearranged or multiple Python branches coexist. Typical use cases include QA engineers who need to validate libraries against 3.8 LTS, 3.12, and in-development 3.13 interpreters on the same CI image; data scientists who keep Anaconda’s distribution alongside vanilla CPython; and educators who distribute coursework that must run identically on classroom laptops regardless of which version a student installed first. The current stable release is 3.13.5, while the catalog records 88 distinct builds that have appeared since PEP 397 first standardized the launcher in 2011. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.

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