如何在CentOS 7下面安装 Anaconda

一、简介

Anaconda is the most popular python data science and machine learning platform,
used for large-scale data processing, predictive analytics, and scientific 
computing. Anaconda distribution ships with more than 1,000 data packages, 
the conda command-line tool and with a desktop graphical user interface
called Anaconda Navigator.This tutorial will go through the steps of 
downloading and installing Anaconda for Python 3 on CentOS 7. 

二、安装Anaconda

At the time of writing this article, the latest stable version of Anaconda is version 5.3.1. Before downloading the Anaconda installer script visit the Anaconda Downloads page and check if there is a new version of Anaconda for Python 3 available for download.

Perform the following steps to install Anaconda on CentOS 7:

1、 Download the Anaconda Installation Script.

Navigate to the /tmp directory and download the Anaconda installation script using
the link that you copied from the Downloads page:

 cd /tmp
 curl -O https://repo.anaconda.com/archive/Anaconda3-5.3.1-Linux-x86_64.sh 

The download may take some time depending on your connection speed.

2、 Verify the Data Integrity of the Script.

Use the sha256sum command to verify the script checksum:

 sha256sum Anaconda3-5.3.1-Linux-x86_64.sh 

You should see an output like the following:

output: 
d4c4256a8f46173b675dd6a62d12f566ed3487f932bab6bb7058f06c124bcc27  Anaconda3-5.3.1-Linux-x86_64.sh

Make sure the hash printed from the command above matches the one available at the Anaconda with Python 3 on 64-bit Linux page for your appropriate Anaconda version.

 https://docs.anaconda.com/anaconda/install/hashes/Anaconda3-5.3.1-Linux-x86_64.sh-hash.html

3、 Run the Anaconda Installation Script

To start the Anaconda installation process run the installation script:

 bash Anaconda3-5.3.1-Linux-x86_64.sh 

You should see an output like the following:

output:
Welcome to Anaconda3 5.3.1 

In order to continue the installation process, please review the license 
agreement. Please, press ENTER to continue 

Press ENTER to continue and then press ENTER to scroll through the license. Once you’re done reviewing the license, you’ll be asked to approve the license terms:

 Do you accept the license terms? [yes|no] 

Type yes to accept the license and you’ll be prompted to choose the installation location.

Output:
Anaconda3 will now be installed into this location: 
/home/linuxize/anaconda3    
    - Press ENTER to confirm the location     
    - Press CTRL-C to abort the installation     
    - Or specify a different location below 

If you get an error saying bunzip2: command not found, install the bzip2 package with:
sudo yum install bzip2.

The installation may take some time and once it is completed, the following output will be displayed:

 Installation finished. 

 Do you wish the installer to initialize Anaconda3 
 in your /home/linuxize/.bashrc ? [yes|no] 

If you want to use the conda command type yes press ENTER and you’ll be presented the following output:

Appending source /home/linuxize/anaconda3/bin/activate to /home/linuxize/.bashrc A backup will be made to: /home/linuxize/.bashrc-anaconda3.bak For this change to become active, you have to open a new terminal. Thank you for installing Anaconda3! 

The installer will also ask you whether you would like to download and install Visual Studio Code.

Anaconda is partnered with Microsoft! Microsoft VSCode 
is a streamlined code editor with support for development operations like debugging, task running and version control. 
To install Visual Studio Code, you will need:    
 - Administrator Privileges     
|- Internet connectivity Visual Studio Code License: https://code.visualstudio.com/license Do you wish to proceed with the installation of Microsoft VSCode? [yes|no] 

You can find more information about Visual Studio on the editor website. If you want to install Visual Studio Code type yes otherwise type no.

To activate the Anaconda installation load the new PATH environment variable which was added by the Anaconda installer into the current shell session with the following

source ~/.bashrc

Verify the Installation

You can verify your Anaconda installation using the conda command. For example to display information about current conda install type:

conda info

active environment : base active env location : /home/linuxize/anaconda3         shell level : 1 user config file : /home/linuxize/.condarc
 populated config files : 
         conda version : 4.5.11
     conda-build version : 3.15.1
         python version : 3.7.0.final.0
     base environment : /home/linuxize/anaconda3  (writable)
         channel URLs : https://repo.anaconda.com/pkgs/main/linux-64
                         https://repo.anaconda.com/pkgs/main/noarch
                         https://repo.anaconda.com/pkgs/free/linux-64
                         https://repo.anaconda.com/pkgs/free/noarch
                         https://repo.anaconda.com/pkgs/r/linux-64
                         https://repo.anaconda.com/pkgs/r/noarch
                         https://repo.anaconda.com/pkgs/pro/linux-64
                         https://repo.anaconda.com/pkgs/pro/noarch
         package cache : /home/linuxize/anaconda3/pkgs
                         /home/linuxize/.conda/pkgs
     envs directories : /home/linuxize/anaconda3/envs
                         /home/linuxize/.conda/envs
             platform : linux-64
             user-agent : conda/4.5.11 requests/2.19.1 CPython/3.7.0 Linux/3.10.0-957.1.3.el7.x86_64 centos/7 glibc/2.17
                 UID:GID : 0:0
             netrc file : None
         offline mode : False

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