05-14-2019
Hi Circuits...
In a short word, DON'T!
Python 2.x.x and 3.x.x are worlds apart.
If your install uses Python 3.x.x then leave well alone as it could well be used by the OS for other things during bootup and the like.
There is nothing to stop you using Python 2.x.x but expect significant differences between the two.
One simple major difference is Python 2.x.x uses print as a statement/command whereas Python 3.x.x has print() as a function.
Another important one is raw inputting is raw_input() in Python 2.x.x and just input() in Python 3.x.x.
Python 2.x.x input() is NOT the same as Python 3.x.x input() .
There are numerous more differences that you should recode anything you write to suit version 3.x.x as 2.x.x is not being supported after around 2020.
So to reiterate DON'T make python2 your default OR vice-versa!
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LEARN ABOUT DEBIAN
python-coverage
PYTHON-COVERAGE(1) General Commands Manual PYTHON-COVERAGE(1)
NAME
python-coverage - measure code coverage of Python program execution
SYNOPSIS
python-coverage -x module.py [ARG...]
python-coverage -e
python-coverage -r [-m]
python-coverage -a [file...]
DESCRIPTION
python-coverage executes a Python program and measures which of its statements are executed and which are not. It stores the information
in the file .coverage in the current working directory.
OPTIONS
-e Erase the .coverage file.
-x Execute a Python module, giving it the remaining command line arguments.
-r Produce a coverage report.
-m With -r, show the line numbers that were missed by the execution.
-a Annotate source files. For each source file foo, produce foo,cover, with executed lines prefixed by ">" and non-executed by "!".
--help Produce a help summary. It might be more helpful than this manual page.
AUTHOR
The python-coverage command is a one-line Python script which calls the coverage.py Python module to do all the work. The module was rigi-
nally developed by Gareth Rees, and is now developed by Ned Batchelder. The module's home page is
http://www.nedbatchelder.com/code/modules/coverage.html.
This manual page was cobbled together by Lars Wirzenius for Debian, by copy-pasting from the help texts from the module.
PYTHON-COVERAGE(1)