Python: Difference between revisions

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== Arrow ==
The default version of Python on Arrow is 2.7.5. and does not require a module to be loaded.  You can start the interactive version by entering the command
python2


To run the batch version, start your script with
The current operating system on the cluster is CentOS 7, and the default version of Python installed as part of the operating system is Python 2. Ordinarily, you should avoid using this built-in version and rather load a module.
#!/usr/bin/env python2


The default version of python3 (3.6.8) along with sympy, numpy, and ipython are also installed, but you must load the python libraries. You can use the interactive version by entering the commands
  module load python/3.10.4
  module load python/3.8.2
python3


You can use the batch version by starting your script with
There are quite a few different versions available, and we can install Python modules in any version of Python as needed.
module load python/3.3.2
#!/usr/bin/env python2


== Phoenix ==
You can see general information about modules [[Setting Up Your Environment#Accessing application software with modules| here.]]
 
The default version of Python on the Phoenix cluster is 2.3.4, the version which comes with Red Hat 4.5. We also have versions 2.6 and 3.0 installed in /soft/python/bin. To use them, you'll need to either fully specify the path to the version you want to use, or load the appropriate module. The modules alias python to the module version and set LD_LIBRARY_PATH, which helps to eliminate some errors that you may otherwise encounter when you use Python modules.
 
$ /soft/python/bin/python2.6
$ /soft/python/bin/python3.0
 
or
 
module load python/2.6
module load python/3.0
 
For example,
 
$ module load python/2.6
$ python
 
== Python modules ==
 
We add Python modules (i.e., libraries) as users request them. The non-default site packages are in /soft/python/lib/python<version>/site-packages.
 
If you encounter any problems with a Python library module, try loading the Python environment module (as above).

Latest revision as of 20:10, December 4, 2023

The current operating system on the cluster is CentOS 7, and the default version of Python installed as part of the operating system is Python 2. Ordinarily, you should avoid using this built-in version and rather load a module. 

module load python/3.10.4

There are quite a few different versions available, and we can install Python modules in any version of Python as needed.

You can see general information about modules here.

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