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  • Pol2021
    Junior Member
    • Sep 2021
    • 6

    #1

    python new version not seen

    Hello, I have installed python 3.9.1 and indeed this is confirmed in the terminal when looking to the version. However when launching Biopython I get the message "Biopython requires Python 3.6 or later. Python 2.7 detected." How is this possible? What to do? Thanks.
  • GenoMax
    Senior Member
    • Feb 2008
    • 7142

    #2
    Python is generally symlinked to python v.2.x. Can you explicitly try `python3`?

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    • AlexPhilip
      Junior Member
      • Sep 2021
      • 1

      #3
      New python versions usually break a lot of modules, especially low-level ones like pyinstaller and cffi. I usually wait for a revision or two before upgrading to let module maintainers catch up. Waiting also lets the PSF fix any bugs and security holes that are bound to be lurking somewhere.
      Last edited by AlexPhilip; 12-09-2021, 07:10 AM.
      2025

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      • QEO
        Junior Member
        • Oct 2021
        • 1

        #4
        The old version is better!
        Full-cycle Web & Mobile applications development
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