Python-Teaching: Difference between revisions

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=== Version ===
=== Version ===
2.7.12
3.6.4
   
   
=== Author / Distributor ===
=== Author / Distributor ===
Line 21: Line 21:
=== Running Program ===
=== Running Program ===


The last version of this application is at /usr/local/apps/eb/Python/2.7.12-foss-2016b
The last version of this application is at /usr/local/apps/eb/Python/3.6.4-foss-2018a


To use this version, please loads the module with
To use this version, please load the module with
<pre class="gscript">
<pre class="gscript">
ml Python/2.7.12-foss-2016b
ml Python/3.6.4-foss-2018a
</pre>  
</pre>  


Here is an example of a shell script, sub.sh, to run on at the batch queue:  
Here is an example of a shell script, sub.sh, to run on the batch queue:  


<div class="gscript2">
<div class="gscript2">
Line 42: Line 42:
   
   
cd $SLURM_SUBMIT_DIR<br>
cd $SLURM_SUBMIT_DIR<br>
ml Python/2.7.12-foss-2016b<br>     
ml Python/3.6.4-foss-2018a<br>     
<u>[options]</u><br>   
python <u>[options]</u><br>   
</div>
</div>
In the real submission script, at least all the above underlined values need to be reviewed or to be replaced by the proper values.   
In the real submission script, at least all the above underlined values need to be reviewed or to be replaced by the proper values.   
Line 58: Line 58:
   
   
<pre  class="gcommand">
<pre  class="gcommand">
ml Python/2.7.12-foss-2016b
ml Python/3.6.4-foss-2018a
    
python python -h
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
-b    : issue warnings about str(bytes_instance), str(bytearray_instance)
        and comparing bytes/bytearray with str. (-bb: issue errors)
-B    : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d    : debug output from parser; also PYTHONDEBUG=x
-E    : ignore PYTHON* environment variables (such as PYTHONPATH)
-h    : print this help message and exit (also --help)
-i    : inspect interactively after running script; forces a prompt even
        if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-I    : isolate Python from the user's environment (implies -E and -s)
-m mod : run library module as a script (terminates option list)
-O    : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x
-OO    : remove doc-strings in addition to the -O optimizations
-q    : don't print version and copyright messages on interactive startup
-s    : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S    : don't imply 'import site' on initialization
-u    : force the binary I/O layers of stdout and stderr to be unbuffered;
        stdin is always buffered; text I/O layer will be line-buffered;
        also PYTHONUNBUFFERED=x
-v    : verbose (trace import statements); also PYTHONVERBOSE=x
        can be supplied multiple times to increase verbosity
-V    : print the Python version number and exit (also --version)
        when given twice, print more information about the build
-W arg : warning control; arg is action:message:category:module:lineno
        also PYTHONWARNINGS=arg
-x    : skip first line of source, allowing use of non-Unix forms of #!cmd
-X opt : set implementation-specific option
file  : program read from script file
-      : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]
 
Other environment variables:
PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH   : ':'-separated list of directories prefixed to the
              default module search path.  The result is sys.path.
PYTHONHOME  : alternate <prefix> directory (or <prefix>:<exec_prefix>).
              The default module search path uses <prefix>/lib/pythonX.X.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.
PYTHONHASHSEED: if this variable is set to 'random', a random value is used
  to seed the hashes of str, bytes and datetime objects.  It can also be
  set to an integer in the range [0,4294967295] to get hash values with a
  predictable seed.
PYTHONMALLOC: set the Python memory allocators and/or install debug hooks
  on Python memory allocators. Use PYTHONMALLOC=debug to install debug
  hooks.


</pre>
</pre>

Revision as of 13:45, 10 August 2018

Category

Programming

Program On

Teaching

Version

3.6.4

Author / Distributor

Python

Description

"Python is a programming language that lets you work more quickly and integrate your systems more effectively." More details are at Python

Running Program

The last version of this application is at /usr/local/apps/eb/Python/3.6.4-foss-2018a

To use this version, please load the module with

ml Python/3.6.4-foss-2018a 

Here is an example of a shell script, sub.sh, to run on the batch queue:

#!/bin/bash
#SBATCH --job-name=j_Python
#SBATCH --partition=batch
#SBATCH --mail-type=ALL
#SBATCH --mail-user=username@uga.edu
#SBATCH --ntasks=1
#SBATCH --mem=10gb
#SBATCH --time=08:00:00
#SBATCH --output=Python.%j.out

cd $SLURM_SUBMIT_DIR
ml Python/3.6.4-foss-2018a
python [options]

In the real submission script, at least all the above underlined values need to be reviewed or to be replaced by the proper values.

Please refer to Running_Jobs_on_the_teaching_cluster, Run X window Jobs and Run interactive Jobs for more details of running jobs at Teaching cluster.


Here is an example of job submission command:

sbatch ./sub.sh 

Documentation

ml Python/3.6.4-foss-2018a 
python python -h
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
-b     : issue warnings about str(bytes_instance), str(bytearray_instance)
         and comparing bytes/bytearray with str. (-bb: issue errors)
-B     : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d     : debug output from parser; also PYTHONDEBUG=x
-E     : ignore PYTHON* environment variables (such as PYTHONPATH)
-h     : print this help message and exit (also --help)
-i     : inspect interactively after running script; forces a prompt even
         if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-I     : isolate Python from the user's environment (implies -E and -s)
-m mod : run library module as a script (terminates option list)
-O     : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x
-OO    : remove doc-strings in addition to the -O optimizations
-q     : don't print version and copyright messages on interactive startup
-s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S     : don't imply 'import site' on initialization
-u     : force the binary I/O layers of stdout and stderr to be unbuffered;
         stdin is always buffered; text I/O layer will be line-buffered;
         also PYTHONUNBUFFERED=x
-v     : verbose (trace import statements); also PYTHONVERBOSE=x
         can be supplied multiple times to increase verbosity
-V     : print the Python version number and exit (also --version)
         when given twice, print more information about the build
-W arg : warning control; arg is action:message:category:module:lineno
         also PYTHONWARNINGS=arg
-x     : skip first line of source, allowing use of non-Unix forms of #!cmd
-X opt : set implementation-specific option
file   : program read from script file
-      : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]

Other environment variables:
PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH   : ':'-separated list of directories prefixed to the
               default module search path.  The result is sys.path.
PYTHONHOME   : alternate <prefix> directory (or <prefix>:<exec_prefix>).
               The default module search path uses <prefix>/lib/pythonX.X.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.
PYTHONHASHSEED: if this variable is set to 'random', a random value is used
   to seed the hashes of str, bytes and datetime objects.  It can also be
   set to an integer in the range [0,4294967295] to get hash values with a
   predictable seed.
PYTHONMALLOC: set the Python memory allocators and/or install debug hooks
   on Python memory allocators. Use PYTHONMALLOC=debug to install debug
   hooks.

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Installation

Source code is obtained from Python

System

64-bit Linux