virtualenv guna python3

1- link python ke python3

update-alternatives --remove python /usr/bin/python2
update-alternatives --install /usr/bin/python python /usr/bin/python3 1

pastikan python --version paparkan python3

2-  link pip ke pip3

  -install

    apt-get install python3-pip

  which pip3

  - link kan

  ln -s /usr/bin/pip3 /usr/bin/pip

  pip -V

3- install virtualenv

  pip install virtualenv

  - setup virtual env for flask(eg)

    virtualenv --python=python3 flask_env

4- enter into flask_env

  source/flask_env/bin/activate

  - prompt will be change

   # (flask_env) mycert@my_dir:

5- nak keluar virt env

   deactivate

ref:

1- https://www.howtoforge.com/tutorial/how-to-install-django-1-10-on-ubuntu-16-04/

2- https://www.howtoforge.com/tutorial/how-to-install-django-on-ubuntu/