How to update a Python package which was installed by pip












1















According to The Ubuntu lifecycle and release cadence Ubuntu 16.04 has full support until mid-2021.



Yet when I run:



pip install cryptography


it says:



Requirement already satisfied: cryptography in /usr/lib/python2.7/dist-packages (1.2.3)


cryptography 1.2.3 is from March, 2016.



The cryptography package fully supports Python 2.7, and there were dozens of new cryptography versions released since 2016, so why is it impossible to update it?










share|improve this question





























    1















    According to The Ubuntu lifecycle and release cadence Ubuntu 16.04 has full support until mid-2021.



    Yet when I run:



    pip install cryptography


    it says:



    Requirement already satisfied: cryptography in /usr/lib/python2.7/dist-packages (1.2.3)


    cryptography 1.2.3 is from March, 2016.



    The cryptography package fully supports Python 2.7, and there were dozens of new cryptography versions released since 2016, so why is it impossible to update it?










    share|improve this question



























      1












      1








      1








      According to The Ubuntu lifecycle and release cadence Ubuntu 16.04 has full support until mid-2021.



      Yet when I run:



      pip install cryptography


      it says:



      Requirement already satisfied: cryptography in /usr/lib/python2.7/dist-packages (1.2.3)


      cryptography 1.2.3 is from March, 2016.



      The cryptography package fully supports Python 2.7, and there were dozens of new cryptography versions released since 2016, so why is it impossible to update it?










      share|improve this question
















      According to The Ubuntu lifecycle and release cadence Ubuntu 16.04 has full support until mid-2021.



      Yet when I run:



      pip install cryptography


      it says:



      Requirement already satisfied: cryptography in /usr/lib/python2.7/dist-packages (1.2.3)


      cryptography 1.2.3 is from March, 2016.



      The cryptography package fully supports Python 2.7, and there were dozens of new cryptography versions released since 2016, so why is it impossible to update it?







      package-management updates python






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 3 hours ago









      karel

      58k12128146




      58k12128146










      asked 5 hours ago









      LuisLuis

      132




      132






















          1 Answer
          1






          active

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          2














          From results of man pip :



          -U, --upgrade
          Upgrade all packages to the newest available version.


          The -U option of pip upgrades all package(s) that come after it in the same command to the newest available version. An exception is made where upgrading a package will conflict with a newer version of one of that package's installed dependencies, in which case the dependency package is kept at the newer version and an older version of the same dependency package is installed alongside it to allow both packages to be upgraded to the newest available version.



          Open the terminal and type:



          sudo pip install -U cryptography   


          This command will upgrade the cryptography package from 1.2.3 to the latest version, 2.4.2.



          Check the version of the upgraded cryptography Python module.



          $ pip freeze | grep cryptography
          cryptography==2.4.2





          share|improve this answer


























          • Can you explain why the -U flag is important here?

            – Luis
            4 hours ago











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          From results of man pip :



          -U, --upgrade
          Upgrade all packages to the newest available version.


          The -U option of pip upgrades all package(s) that come after it in the same command to the newest available version. An exception is made where upgrading a package will conflict with a newer version of one of that package's installed dependencies, in which case the dependency package is kept at the newer version and an older version of the same dependency package is installed alongside it to allow both packages to be upgraded to the newest available version.



          Open the terminal and type:



          sudo pip install -U cryptography   


          This command will upgrade the cryptography package from 1.2.3 to the latest version, 2.4.2.



          Check the version of the upgraded cryptography Python module.



          $ pip freeze | grep cryptography
          cryptography==2.4.2





          share|improve this answer


























          • Can you explain why the -U flag is important here?

            – Luis
            4 hours ago
















          2














          From results of man pip :



          -U, --upgrade
          Upgrade all packages to the newest available version.


          The -U option of pip upgrades all package(s) that come after it in the same command to the newest available version. An exception is made where upgrading a package will conflict with a newer version of one of that package's installed dependencies, in which case the dependency package is kept at the newer version and an older version of the same dependency package is installed alongside it to allow both packages to be upgraded to the newest available version.



          Open the terminal and type:



          sudo pip install -U cryptography   


          This command will upgrade the cryptography package from 1.2.3 to the latest version, 2.4.2.



          Check the version of the upgraded cryptography Python module.



          $ pip freeze | grep cryptography
          cryptography==2.4.2





          share|improve this answer


























          • Can you explain why the -U flag is important here?

            – Luis
            4 hours ago














          2












          2








          2







          From results of man pip :



          -U, --upgrade
          Upgrade all packages to the newest available version.


          The -U option of pip upgrades all package(s) that come after it in the same command to the newest available version. An exception is made where upgrading a package will conflict with a newer version of one of that package's installed dependencies, in which case the dependency package is kept at the newer version and an older version of the same dependency package is installed alongside it to allow both packages to be upgraded to the newest available version.



          Open the terminal and type:



          sudo pip install -U cryptography   


          This command will upgrade the cryptography package from 1.2.3 to the latest version, 2.4.2.



          Check the version of the upgraded cryptography Python module.



          $ pip freeze | grep cryptography
          cryptography==2.4.2





          share|improve this answer















          From results of man pip :



          -U, --upgrade
          Upgrade all packages to the newest available version.


          The -U option of pip upgrades all package(s) that come after it in the same command to the newest available version. An exception is made where upgrading a package will conflict with a newer version of one of that package's installed dependencies, in which case the dependency package is kept at the newer version and an older version of the same dependency package is installed alongside it to allow both packages to be upgraded to the newest available version.



          Open the terminal and type:



          sudo pip install -U cryptography   


          This command will upgrade the cryptography package from 1.2.3 to the latest version, 2.4.2.



          Check the version of the upgraded cryptography Python module.



          $ pip freeze | grep cryptography
          cryptography==2.4.2






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 4 hours ago

























          answered 5 hours ago









          karelkarel

          58k12128146




          58k12128146













          • Can you explain why the -U flag is important here?

            – Luis
            4 hours ago



















          • Can you explain why the -U flag is important here?

            – Luis
            4 hours ago

















          Can you explain why the -U flag is important here?

          – Luis
          4 hours ago





          Can you explain why the -U flag is important here?

          – Luis
          4 hours ago


















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