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Top Forums UNIX for Beginners Questions & Answers How to set python2 as my default? Post 303035087 by Circuits on Tuesday 14th of May 2019 01:09:54 PM
Old 05-14-2019
Yes I am well aware of the differences between py2 and py3 lol I have had to convert a handful of python scripts from 2 to 3 in the past. As far as I know neither the Linux OS or the DOS OS has any dependencies on Python. No I just need to temporarily move from py3 to py2 so that I can compile an older program and I would like to do it with update-alternatives so that I can easily change back after I compile the program.
 

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isympy(1)																 isympy(1)

NAME
isympy - interactive shell for SymPy SYNOPSIS
isympy [-c | --console] isympy [ {-h | --help} | {-v | --version} ] DESCRIPTION
isympy is a Python shell for SymPy. It is just a normal python shell (ipython shell if you have the ipython package installed) that exe- cutes the following commands so that you don't have to: >>> from __future__ import division >>> from sympy import * >>> x, y, z = symbols("xyz") >>> k, m, n = symbols("kmn", integer=True) So starting isympy is equivalent to starting python (or ipython) and executing the above commands by hand. It is intended for easy and quick experimentation with SymPy. For more complicated programs, it is recommended to write a script and import things explicitly (using the "from sympy import sin, log, Symbol, ..." idiom). OPTIONS
-c shell, --console=shell Use the specified shell (python or ipython) as console backend instead of the default one (ipython if present or python otherwise). Example: isympy -c python FILES
${HOME}/.sympy-history Saves the history of commands when using the python shell as backend. BUGS
The upstreams BTS can be found at <http://code.google.com/p/sympy/issues/list> Please report all bugs that you find in there, this will help improve the overall quality of SymPy. SEE ALSO
ipython(1), python(1) 2007-10-8 isympy(1)
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