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Python - History of Python and release dates. The Story of Python, by Its Creator, Guido van Rossum
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  1. History of the software
  2. =======================
  3.  
  4. Python was created in the early 1990s by Guido van Rossum at Stichting
  5. Mathematisch Centrum (CWI, see https://www.cwi.nl/) in the Netherlands
  6. as a successor of a language called ABC.  Guido remains Python's
  7. principal author, although it includes many contributions from others.
  8.  
  9. In 1995, Guido continued his work on Python at the Corporation for
  10. National Research Initiatives (CNRI, see
  11. https://www.cnri.reston.va.us/) in Reston, Virginia where he released
  12. several versions of the software.
  13.  
  14. In May 2000, Guido and the Python core development team moved to
  15. BeOpen.com to form the BeOpen PythonLabs team.  In October of the same
  16. year, the PythonLabs team moved to Digital Creations (now Zope
  17. Corporation; see https://www.zope.org/).  In 2001, the Python Software
  18. Foundation (PSF, see https://www.python.org/psf/) was formed, a non-
  19. profit organization created specifically to own Python-related
  20. Intellectual Property.  Zope Corporation is a sponsoring member of the
  21. PSF.
  22.  
  23. All Python releases are Open Source (see https://opensource.org/ for
  24. the Open Source Definition). Historically, most, but not all, Python
  25. releases have also been GPL-compatible; the table below summarizes the
  26. various releases.
  27.  
  28. +------------------+----------------+--------------+--------------+-------------------+
  29. | Release          | Derived from   | Year         | Owner        | GPL compatible?   |
  30. |==================|================|==============|==============|===================|
  31. | 0.9.0 thru 1.2   | n/a            | 1991-1995    | CWI          | yes               |
  32. +------------------+----------------+--------------+--------------+-------------------+
  33. | 1.3 thru 1.5.2   | 1.2            | 1995-1999    | CNRI         | yes               |
  34. +------------------+----------------+--------------+--------------+-------------------+
  35. | 1.6              | 1.5.2          | 2000         | CNRI         | no                |
  36. +------------------+----------------+--------------+--------------+-------------------+
  37. | 2.0              | 1.6            | 2000         | BeOpen.com   | no                |
  38. +------------------+----------------+--------------+--------------+-------------------+
  39. | 1.6.1            | 1.6            | 2001         | CNRI         | no                |
  40. +------------------+----------------+--------------+--------------+-------------------+
  41. | 2.1              | 2.0+1.6.1      | 2001         | PSF          | no                |
  42. +------------------+----------------+--------------+--------------+-------------------+
  43. | 2.0.1            | 2.0+1.6.1      | 2001         | PSF          | yes               |
  44. +------------------+----------------+--------------+--------------+-------------------+
  45. | 2.1.1            | 2.1+2.0.1      | 2001         | PSF          | yes               |
  46. +------------------+----------------+--------------+--------------+-------------------+
  47. | 2.1.2            | 2.1.1          | 2002         | PSF          | yes               |
  48. +------------------+----------------+--------------+--------------+-------------------+
  49. | 2.1.3            | 2.1.2          | 2002         | PSF          | yes               |
  50. +------------------+----------------+--------------+--------------+-------------------+
  51. | 2.2 and above    | 2.1.1          | 2001-now     | PSF          | yes               |
  52. +------------------+----------------+--------------+--------------+-------------------+
  53.  
  54. Note:
  55.  
  56.  GPL-compatible doesn't mean that we're distributing Python under the
  57.  GPL.  All Python licenses, unlike the GPL, let you distribute a
  58.  modified version without making your changes open source. The GPL-
  59.  compatible licenses make it possible to combine Python with other
  60.  software that is released under the GPL; the others don't.
  61.  
  62. Thanks to the many outside volunteers who have worked under Guido's
  63. direction to make these releases possible.
  64.  
  65. Related video:
  66. The Story of Python, by Its Creator, Guido van Rossum
  67. https://www.youtube.com/watch?v=J0Aq44Pze-w
















Python software and documentation are licensed under the PSF License Agreement.
Starting with Python 3.8.6, examples, recipes, and other code in the documentation are dual licensed under the PSF License Agreement and the Zero-Clause BSD license.
Some software incorporated into Python is under different licenses. The licenses are listed with code falling under that license. See Licenses and Acknowledgements for Incorporated Software for an incomplete list of these licenses.

Python and it's documentation is:
Copyright © 2001-2022 Python Software Foundation. All rights reserved.
Copyright © 2000 BeOpen.com. All rights reserved.
Copyright © 1995-2000 Corporation for National Research Initiatives. All rights reserved.
Copyright © 1991-1995 Stichting Mathematisch Centrum. All rights reserved.

See History and License for complete license and permissions information:
https://docs.python.org/3/license.html#psf-license
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