PYVENV.md

Knows More

Installation

Simple

pip3 install --upgrade knowsmore

Using Virtual Environments

Python applications will use packages and modules that don’t come as part of the standard library. Sometimes, because the application may require that a particular version of the library’s interface it may conflict with installed versions.

The solution for this problem is to create a virtual environment, a self-contained directory tree that contains a Python installation for a particular version of Python, plus a number of additional packages.

Install Python virtualenv package

python3 -m pip install --upgrade virtualenv

Goes to current user directory

On Unix or MacOS, run:

cd ~

On Powershell use this command

cd cd $env:USERPROFILE

Create a Virtual Environments

python3 -m venv knowsmore-venv

Activate Virtual Environment

Once you’ve created a virtual environment, you may activate it.

On Windows, run:

.\knowsmore-venv\Scripts\Activate.ps1

On Unix or MacOS, run:

source knowsmore-venv/bin/activate

Note: Activating the virtual environment will change your shell’s prompt to show what virtual environment you’re using, and modify the environment so that running python will get you that particular version and installation of Python.

Install the knowsmore

python -m pip install -U pip
python -m pip install knowsmore

Note: As we are inside virtual environment we must use only python command without 2 or 3 at end.

Deactivate virtual environment

To deactivate a virtual environment, type:

deactivate

into the terminal.

Create the knowsmore bash

Create a script on /usr/local/bin/knowsmore

#!/bin/bash
#

prog="~/knowsmore-venv/bin/activate"
prog="${prog/#~/$HOME}"
while [ -h "${prog}" ]; do
    newProg=`/bin/ls -ld "${prog}"`

    newProg=`expr "${newProg}" : ".* -> \(.*\)$"`
    if expr "x${newProg}" : 'x/' >/dev/null; then
        prog="${newProg}"
    else
        progdir=`dirname "${prog}"`
        prog="${progdir}/${newProg}"
    fi
done

oldwd=`pwd`
progdir=`dirname "${prog}"`
if [ -d "${prog}" ]; then
  progdir=`dirname "${prog}.txt"`
fi

cd "${progdir}"
progdir=`pwd`
prog="${progdir}"/`basename "${prog}"`
cd "${oldwd}"

# add current location to path for aapt
PATH=$PATH:`pwd`;
export PATH;
source "$prog" && python -m knowsmore "$@"

Make it executable

chmod +x /usr/local/bin/knowsmore