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working_with_python [2018/08/30 07:49] – [Bypassing the existing python environment] lenocilworking_with_python [2019/02/20 13:49] – [Working with Python] lenocil
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 ====== Working with Python ====== ====== Working with Python ======
-Python is available on all Sterrewacht and Lorentz Institute GNU/Linux workstations. In most cases, both python 2 (currently 2.7) and python 3 (currently 3.6) are available.+Python is available on all Sterrewacht and Lorentz Institute GNU/Linux workstations. In most cases, both python 2 (currently 2.7) and python 3 (currently 3.7) are available.
  
 Notes from a [[https://www.strw.leidenuniv.nl/python/| python introduction course]] are available on the observatory web site.  Notes from a [[https://www.strw.leidenuniv.nl/python/| python introduction course]] are available on the observatory web site. 
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 ====== Bypassing the existing python environment ====== ====== Bypassing the existing python environment ======
 Occasionally, something in the systemwide directories (e.g ''/software/local/lib64/python2.7/site-packages'') interferes with your python application. Perhaps you have a code that requires a specific, older, version of numpy or matplotlib. Just installing that version is not always sufficient. The trick is, to set the PYTHONPATH to point first to a directory where you place a private ''sitecustomize.py'' which then overrides the one we have placed in /usr/lib64/python2.7/site-packages (which is where we add the /software directories to the path for everyone). Here is how: Occasionally, something in the systemwide directories (e.g ''/software/local/lib64/python2.7/site-packages'') interferes with your python application. Perhaps you have a code that requires a specific, older, version of numpy or matplotlib. Just installing that version is not always sufficient. The trick is, to set the PYTHONPATH to point first to a directory where you place a private ''sitecustomize.py'' which then overrides the one we have placed in /usr/lib64/python2.7/site-packages (which is where we add the /software directories to the path for everyone). Here is how:
-<code sh>+<code bash>
   mkdir /some/location/python_custom_dir   mkdir /some/location/python_custom_dir
   setenv PYTHONPATH /some/location/python_custom_dir:/usr/lib64/python2.7/site-packages   setenv PYTHONPATH /some/location/python_custom_dir:/usr/lib64/python2.7/site-packages
working_with_python.txt · Last modified: 2024/04/22 10:51 by jansen

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