Anacodna Conda and Virtualenv use tutorials to create a virtual environment

Conda Creating a virtual Environment 1. View Packages

• conda listSee which packages are installed
• conda env listSee what virtual environments are available
• conda -VView the version of Conda

2. Create a virtual environment, named myflaskapp， nmeans that name; and install flaskPackage.

Note that the Conda create command requires so you give it the name of the a package to install in the new environment.

condacommand to create a virtual environment, you must specify one or more of the ones you need to install package .

conda create -n py2 python=2* anaconda
This will install the ANACONDA2 version.

Chestnut 1:
This command installs a myflaskapp package named virtual Environment flask .

create -n myflaskapp flask

Chestnut 2:
This is the clone that created the same Python environment as the original system, named nb .

create -n nb --clone root

Chestnut 3:
There's no need to specify a specific package.

create --name $ENVIRONMENT_NAME python

Other:

create -n py3 python=3*$ conda create -n py2 python=2*

This would create the environments, one with Python3 and the other with Python2. I typically set one of these as my default by adding source activate Py3 to my terminal startup. Typically I only use these ' named Python ' environments to run a Python REPL or does general Python tasks. I ' ll create another Conda environment named specifically for each real project I work on.

This creates an environment of two Python versions.

3. Switching the environment

The Linux command was not tested.

• Linux:source activate myflaskapp
• Windows:activate myflaskapp
  
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4. Close the Environment

• Linux:source deactivate
• Windows:deactivate

5. Change the specified virtual environment installation package

install -n yourenvname [package]

6. Removing a virtual environment

• To remove a package from an environment

  $ENVIRONMENT_NAME $PACKAGE_NAME

• Remove a virtual environment

  --all

All of these virtual environments are under the C:\Anaconda3\envs folder.

Virtualenv Creating a Virtual Environment 1. Install Virtualenv

install virtualenv

2. Create a virtual environment

$ mkdir myproject$ cd myproject$ virtualenv venv

Create a myproject folder named, and then create a virtual environment here venv .

The virtualenv of adding options when creating virtualenv --no-site-packages will not read the system package, as follows:

virtualenv nowamagic_venv --no-site-packages

--distributeOption enables virtualenv to use the new release-based package management system rather than the Setuptools-acquired package. All you need to know now is that the--distribute option automatically installs PIP in the new virtual environment, so you don't need to install it manually. When you become a more experienced Python developer, you will understand the details.

--distribute nowamagic_venv

3. Activating the virtual environment

• Linux: $ . venv/bin/activate orsource $ENV_BASE_DIR/$ENVIRONMENT_NAME/bin/activate
  No experiments, so temporarily write two methods, if you go to the venv Virtual Environment folder, you cansource bin/activate
• Windows:$ venv\scripts\activate

4. Exit the Environment

deactivate

Resources

• Using Continuum Analytics Conda as a replacement for virtualenv, Pyenv, and more!
• Conda vs. Pip vs. virtualenv
• Create virtual environments for Python with Conda
• Conda-documention
• Flask-virtualenv Introduction
• Switching between Anaconda and Anaconda3
• Managing the Python development environment with Conda
• Build multiple Python independent development environments with VIRTUALENV
• Python Scientific Computing Environment recommendation--anaconda

Wen/michael_ Xiang _ (Jane book author)
Original link: http://www.jianshu.com/p/ab93973286cc
Copyright belongs to the author, please contact the author to obtain authorization, and Mark "book author".

Anacodna Conda and Virtualenv use tutorials to create a virtual environment