python create environment from requirements.txt code example

Example 1: creating venv python3

# CREATE FOLDER FOR A PROJECT
mkdir project_folder
cd project_folder

# CREATE VIRTUAL ENVIRONMENT
python3.7 -m venv myvenv 
# or alternativelly
virtualenv myvenv --python=python3.7

# ACTIVATE VIRTUAL ENVIRONMENT
source myvenv/bin/activate

Example 2: how to activate venv python

tutorial-env\Scripts\activate.bat

Example 3: how to create a requirements.txt python

# Exit the current venv
(shiny_new_env)$ conda deactivate
# Spin up a new one
$ conda create -n env_2 python=3.4
# Activate it
$ conda activate env_2
# Install from our fancy new file
(env_2)$ pip install -r requirements.txt