Installation and use of Anaconda

1. download

• Tsinghua mirror ：https://mirrors.tuna.tsinghua.edu.cn/anaconda/archive/
• official ：https://www.anaconda.com/download/

2. install

With what I installed Anaconda3-5.3.0-Linux-x86_64.sh As an example ：

sh Anaconda3-5.3.0-Linux-x86_64.sh

Full use yes + enter , By default, it will be installed in home Under the table of contents .

• Add environment variables

# That is, the installation path 
export PATH="/home/ user name /anaconda3/bin:$PATH"

bring .bashrc Added path takes effect

source ~/.bashrc

• see python The path of

which python

• Check whether the installation is successful

# Query the installed version 
conda -V

3. Set up domestic image

#  add to Anaconda Of TUNA Mirror image 
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
# TUNA Of help The image address is quoted in , Need to get rid of it. 
 
#  Set the channel address when searching 
conda config --set show_channel_urls yes

After executing the above order , Will generate ~/.condarc(Linux/Mac) or C:\Users\USER_NAME.condarc file , Record our understanding of conda Configuration of , Create directly and manually 、 Editing the file has the same effect .

4. Use

（1） install python Environment and use

#  Create a file called python36 Environment , Appoint Python The version is 3.6（ Don't worry about it 3.6.x,conda Will automatically search for 3.4.x The latest version of ）
conda create --name python34 python=3.4
 
#  After installed , Use activate Activate an environment 
activate python36 # for Windows
source activate python36 # for Linux & Mac
#  After activation , Will find terminal There's a lot of input python36 The words... 
 
#  here , Input again 
python --version

#  If you want to return to the default python Environmental Science , function 
deactivate python36 # for Windows
source deactivate python36 # for Linux & Mac
 
#  Delete an existing environment 
conda remove --name python36 --all
# perhaps 
conda remove -n python36 --all

# Delete a package in the virtual environment 
conda remove -n python36 scipy

Users install different python The environment will be placed in the directory ~/anaconda/envs Next , You can run conda info -e View the installed environment , The currently active environment will be displayed with an asterisk or parentheses .

（2） Use conda Install the normal package

• Installation of ordinary package

Conda Package management and pip similar . for example , If you need to install scipy：

#  install scipy
conda install scipy
 
#  View the installed packages
conda list

• Install the specified version

Search version first

conda search tensorflow

Install the specified version and build：

conda install tensorflow=1.12.0=mkl_py36h4f00353_0

（3）conda Some common operations of

• View the current environment

# 1.  Method 1 ：
conda info -e
#2.  Method 2 ：
conda info --envs
# 3.  Method 3 ：
conda env list

• View the installation package of the environment

#  View the installed packages in the current environment 
conda list
 
#  View installed packages for a specified environment 
conda list -n python36

• lookup package Information

conda search numpy

• install package

conda install -n python36 numpy
#  If not -n Specify the environment name , Is installed in the currently active environment 

• to update package

conda update -n python36 numpy

• Delete package

conda remove -n python36 numpy

• to update conda, keep conda newest

conda update conda

• to update anaconda

conda update anaconda

• to update python

Suppose the current environment is python 3.6, conda Will python Upgrade to 3.6.x The latest version of the series

conda update python

If you create a new python Environmental Science , such as 3.6, function conda create -n python36 python=3.6 after ,conda Install only python 3.6 Related mandatory items , Such as python, pip etc. , If you want the environment to be like the default environment , install anaconda Collection package , It only needs ：

#  Install in the current environment anaconda Bag collection 
conda install anaconda
 
#  Combined with the command to create the environment , The above operations can be combined into 
conda create -n python36 python=3.6 anaconda
#  Or you don't have to install it all , Install your own... As needed package that will do 

5. Environment moves to another machine

conda list -e > requirement.txt
conda create -n python36 --file requirement.txt