Conda로 가상환경 만들기

conda create -n [환경명] python=[버전]

[root@nipa2019-0010 etc] conda create -n mrc python=3.6.8
Collecting package metadata (current_repodata.json): done
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 4.8.2
  latest version: 4.8.3

Please update conda by running

    $ conda update -n base -c defaults conda



## Package Plan ##

  environment location: /root/anaconda3/envs/mrc

  added / updated specs:
    - python=3.6.8


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    certifi-2020.4.5.1         |           py36_0         155 KB
    ncurses-6.2                |       he6710b0_1         817 KB
    openssl-1.1.1g             |       h7b6447c_0         2.5 MB
    pip-20.0.2                 |           py36_3         1.7 MB
    python-3.6.8               |       h0371630_0        30.1 MB
    setuptools-47.1.1          |           py36_0         514 KB
    sqlite-3.31.1              |       h62c20be_1         1.1 MB
    wheel-0.34.2               |           py36_0          51 KB
    xz-5.2.5                   |       h7b6447c_0         341 KB
    ------------------------------------------------------------
                                           Total:        37.2 MB

The following NEW packages will be INSTALLED:

  _libgcc_mutex      pkgs/main/linux-64::_libgcc_mutex-0.1-main
  ca-certificates    pkgs/main/linux-64::ca-certificates-2020.1.1-0
  certifi            pkgs/main/linux-64::certifi-2020.4.5.1-py36_0
  libedit            pkgs/main/linux-64::libedit-3.1.20181209-hc058e9b_0
  libffi             pkgs/main/linux-64::libffi-3.2.1-hd88cf55_4
  libgcc-ng          pkgs/main/linux-64::libgcc-ng-9.1.0-hdf63c60_0
  libstdcxx-ng       pkgs/main/linux-64::libstdcxx-ng-9.1.0-hdf63c60_0
  ncurses            pkgs/main/linux-64::ncurses-6.2-he6710b0_1
  openssl            pkgs/main/linux-64::openssl-1.1.1g-h7b6447c_0
  pip                pkgs/main/linux-64::pip-20.0.2-py36_3
  python             pkgs/main/linux-64::python-3.6.8-h0371630_0
  readline           pkgs/main/linux-64::readline-7.0-h7b6447c_5
  setuptools         pkgs/main/linux-64::setuptools-47.1.1-py36_0
  sqlite             pkgs/main/linux-64::sqlite-3.31.1-h62c20be_1
  tk                 pkgs/main/linux-64::tk-8.6.8-hbc83047_0
  wheel              pkgs/main/linux-64::wheel-0.34.2-py36_0
  xz                 pkgs/main/linux-64::xz-5.2.5-h7b6447c_0
  zlib               pkgs/main/linux-64::zlib-1.2.11-h7b6447c_3


Proceed ([y]/n)? y


Downloading and Extracting Packages
openssl-1.1.1g       | 2.5 MB    | ###########################################################################
python-3.6.8         | 30.1 MB   | ###########################################################################
pip-20.0.2           | 1.7 MB    | ###########################################################################
ncurses-6.2          | 817 KB    | ###########################################################################
certifi-2020.4.5.1   | 155 KB    | ###########################################################################
setuptools-47.1.1    | 514 KB    | ###########################################################################
wheel-0.34.2         | 51 KB     | ###########################################################################
xz-5.2.5             | 341 KB    | ###########################################################################
sqlite-3.31.1        | 1.1 MB    | ###########################################################################
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate mrc
#
# To deactivate an active environment, use
#
#     $ conda deactivate

위와같이 python을 추가로 지정하면 해당 python 버전으로 환경을 생성한다.

 

conda info --envs

[root@nipa2019-0010 mrc] conda info --envs
# conda environments:
#
                         /home/centos/anaconda3
                         /home/centos/anaconda3/envs/caffe2_p27
                         /home/centos/anaconda3/envs/caffe_p27
                         /home/centos/anaconda3/envs/caffe_p35
                         /home/centos/anaconda3/envs/chainer_p27
                         /home/centos/anaconda3/envs/chainer_p36
                         /home/centos/anaconda3/envs/cntk_p27
                         /home/centos/anaconda3/envs/cntk_p36
                         /home/centos/anaconda3/envs/iota
                         /home/centos/anaconda3/envs/mxnet_p27
                         /home/centos/anaconda3/envs/mxnet_p36
                         /home/centos/anaconda3/envs/python2
                         /home/centos/anaconda3/envs/python3
                         /home/centos/anaconda3/envs/pytorch_p27
                         /home/centos/anaconda3/envs/pytorch_p36
                         /home/centos/anaconda3/envs/tensorflow2_p27
                         /home/centos/anaconda3/envs/tensorflow2_p36
                         /home/centos/anaconda3/envs/tensorflow_p27
                         /home/centos/anaconda3/envs/tensorflow_p36
                         /home/centos/anaconda3/envs/theano_p27
                         /home/centos/anaconda3/envs/theano_p36
base                  *  /root/anaconda3
mrc                      /root/anaconda3/envs/mrc

mrc라는 이름의 가상환경이 생성된 것을 확인할 수 있다. 현재 base에 *가 표시되어 있는데 현재 환경이 base라는 의미이다. 

 

source activate mrc

[root@nipa2019-0010 mrc] source activate mrc
(mrc) [root@nipa2019-0010 mrc] conda info --envs
# conda environments:
#
                         /home/centos/anaconda3
                         /home/centos/anaconda3/envs/caffe2_p27
                         /home/centos/anaconda3/envs/caffe_p27
                         /home/centos/anaconda3/envs/caffe_p35
                         /home/centos/anaconda3/envs/chainer_p27
                         /home/centos/anaconda3/envs/chainer_p36
                         /home/centos/anaconda3/envs/cntk_p27
                         /home/centos/anaconda3/envs/cntk_p36
                         /home/centos/anaconda3/envs/iota
                         /home/centos/anaconda3/envs/mxnet_p27
                         /home/centos/anaconda3/envs/mxnet_p36
                         /home/centos/anaconda3/envs/python2
                         /home/centos/anaconda3/envs/python3
                         /home/centos/anaconda3/envs/pytorch_p27
                         /home/centos/anaconda3/envs/pytorch_p36
                         /home/centos/anaconda3/envs/tensorflow2_p27
                         /home/centos/anaconda3/envs/tensorflow2_p36
                         /home/centos/anaconda3/envs/tensorflow_p27
                         /home/centos/anaconda3/envs/tensorflow_p36
                         /home/centos/anaconda3/envs/theano_p27
                         /home/centos/anaconda3/envs/theano_p36
base                     /root/anaconda3
mrc                   *  /root/anaconda3/envs/mrc

윈도우 같은 경우 그냥 activate만 써도 가상환경을 쓸 수 있는데 centos에서는 앞에 source를 추가로 붙여야 한다. 두번째 줄에 (mrc)가 붙어 있는 상태로 가상환경 상태에 돌입된 것을 확인 할 수 있지만, 확인 사살로 conda info --envs를 입력해서 확인해보면 base가 아닌 mrc에 *가 되어 있는 것은 확인 할 수 있다.