Python環境構築手順
Pythonの基礎はAidemyで勉強させてもらってるけど、
そろそろ動かしたい。
って事で今回はその環境を構築します。
やっぱり座学だけだと飽きるので、ざーっと基本的なとこ見たら、
環境にも入れ込んでいじり倒したい。
というわけで、まずはPythonの導入。
環境
- さくらVPS
- CentOS 7
- Python3.6.5
- Python 2.7.5
参考URL
構築作業
CentOS 7 では、Python 2.7 がインストールされてる、との事。
パッケージ確認してみる。
[root@ts_server ~]# rpm -qa | grep python
python-perf-3.10.0-327.36.3.el7.x86_64
abrt-addon-python-2.1.11-36.el7.centos.x86_64
libxml2-python-2.9.1-6.el7_2.3.x86_64
python-dmidecode-3.10.13-11.el7.x86_64
python-kitchen-1.1.1-5.el7.noarch
python-iniparse-0.4-9.el7.noarch
newt-python-0.52.15-4.el7.x86_64
python-slip-0.4.0-2.el7.noarch
libreport-python-2.1.11-32.el7.centos.x86_64
python-pycurl-7.19.0-17.el7.x86_64
rpm-python-4.11.3-17.el7.x86_64
abrt-python-2.1.11-36.el7.centos.x86_64
libstoragemgmt-python-1.2.3-4.el7.noarch
dbus-python-1.1.1-9.el7.x86_64
python-chardet-2.2.1-1.el7_1.noarch
python-six-1.9.0-2.el7.noarch
libselinux-python-2.2.2-6.el7.x86_64
python-slip-dbus-0.4.0-2.el7.noarch
python-2.7.5-39.el7_2.x86_64 #←Pythonの本体モジュール。
python-libs-2.7.5-39.el7_2.x86_64
python-urlgrabber-3.10-7.el7.noarch
systemd-python-219-19.el7_2.13.x86_64
python-decorator-3.4.0-3.el7.noarch
python-augeas-0.5.0-2.el7.noarch
python-pyudev-0.15-7.el7_2.1.noarch
python-configobj-4.7.2-7.el7.noarch
langtable-python-0.0.31-3.el7.noarch
[root@ts_server ~]#
確かに既に導入されてた。
PythonJapanではPython3.xのインストールを推奨してたので、3.6.5を入れてみる。
IUSを使用してインストールしてみる。
IUS のリポジトリを yum に追加
[root@ts_server ~]# yum -y install https://centos7.iuscommunity.org/ius-release.rpm
Loaded plugins: fastestmirror, langpacks
ius-release.rpm | 8.1 kB 00:00
Examining /var/tmp/yum-root-MRlzFF/ius-release.rpm: ius-release-1.0-15.ius.centos7.noarch
Marking /var/tmp/yum-root-MRlzFF/ius-release.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package ius-release.noarch 0:1.0-15.ius.centos7 will be installed
--> Finished Dependency Resolution
base/7/x86_64 | 3.6 kB 00:00
base/7/x86_64/group_gz | 166 kB 00:00
base/7/x86_64/primary_db | 5.9 MB 00:00
epel/x86_64/metalink | 8.8 kB 00:00
epel/x86_64 | 3.2 kB 00:00
epel/x86_64/group_gz | 88 kB 00:00
epel/x86_64/updateinfo | 944 kB 00:00
epel/x86_64/primary | 3.6 MB 00:00
extras/7/x86_64 | 3.4 kB 00:00
extras/7/x86_64/primary_db | 187 kB 00:00
updates/7/x86_64 | 3.4 kB 00:00
updates/7/x86_64/primary_db | 5.2 MB 00:00
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
ius-release noarch 1.0-15.ius.centos7 /ius-release 8.5 k
Transaction Summary
================================================================================
Install 1 Package
Total size: 8.5 k
Installed size: 8.5 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : ius-release-1.0-15.ius.centos7.noarch 1/1
Verifying : ius-release-1.0-15.ius.centos7.noarch 1/1
Installed:
ius-release.noarch 0:1.0-15.ius.centos7
Complete!
[root@ts_server ~]#
Python 3.6.5のインストール
ついでに拡張モジュールのインストールに必要な開発環境と、pip コマンドも入れる。
[root@ts_server ~]# yum -y install python36u python36u-devel python36u-pip
Loaded plugins: fastestmirror, langpacks
ius | 2.3 kB 00:00
ius/x86_64/primary_db | 392 kB 00:02
Determining fastest mirrors
* base: ftp.iij.ad.jp
* epel: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* ius: hkg.mirror.rackspace.com
* updates: ftp.iij.ad.jp
epel 12686/12686
Resolving Dependencies
--> Running transaction check
---> Package python36u.x86_64 0:3.6.5-1.ius.centos7 will be installed
--> Processing Dependency: python36u-libs(x86-64) = 3.6.5-1.ius.centos7 for package: python36u-3.6.5-1.ius.centos7.x86_64
--> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: python36u-3.6.5-1.ius.centos7.x86_64
---> Package python36u-devel.x86_64 0:3.6.5-1.ius.centos7 will be installed
---> Package python36u-pip.noarch 0:9.0.1-1.ius.centos7 will be installed
--> Processing Dependency: python36u-setuptools for package: python36u-pip-9.0.1-1.ius.centos7.noarch
--> Running transaction check
---> Package python36u-libs.x86_64 0:3.6.5-1.ius.centos7 will be installed
--> Processing Dependency: libcrypto.so.10(OPENSSL_1.0.2)(64bit) for package: python36u-libs-3.6.5-1.ius.centos7.x86_64
---> Package python36u-setuptools.noarch 0:39.0.1-1.ius.centos7 will be installed
--> Running transaction check
---> Package openssl-libs.x86_64 1:1.0.1e-51.el7_2.7 will be updated
--> Processing Dependency: openssl-libs(x86-64) = 1:1.0.1e-51.el7_2.7 for package: 1:openssl-1.0.1e-51.el7_2.7.x86_64
---> Package openssl-libs.x86_64 1:1.0.2k-12.el7 will be an update
--> Running transaction check
---> Package openssl.x86_64 1:1.0.1e-51.el7_2.7 will be updated
---> Package openssl.x86_64 1:1.0.2k-12.el7 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository
Size
================================================================================
Installing:
python36u x86_64 3.6.5-1.ius.centos7 ius 57 k
python36u-devel x86_64 3.6.5-1.ius.centos7 ius 839 k
python36u-pip noarch 9.0.1-1.ius.centos7 ius 1.8 M
Installing for dependencies:
python36u-libs x86_64 3.6.5-1.ius.centos7 ius 8.7 M
python36u-setuptools noarch 39.0.1-1.ius.centos7 ius 642 k
Updating for dependencies:
openssl x86_64 1:1.0.2k-12.el7 base 492 k
openssl-libs x86_64 1:1.0.2k-12.el7 base 1.2 M
Transaction Summary
================================================================================
Install 3 Packages (+2 Dependent packages)
Upgrade ( 2 Dependent packages)
Total download size: 14 M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/7): openssl-1.0.2k-12.el7.x86_64.rpm | 492 kB 00:00
(2/7): openssl-libs-1.0.2k-12.el7.x86_64.rpm | 1.2 MB 00:00
warning: /var/cache/yum/x86_64/7/ius/packages/python36u-3.6.5-1.ius.centos7.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 9cd4953f: NOKEY
Public key for python36u-3.6.5-1.ius.centos7.x86_64.rpm is not installed
(3/7): python36u-3.6.5-1.ius.centos7.x86_64.rpm | 57 kB 00:00
(4/7): python36u-devel-3.6.5-1.ius.centos7.x86_64.rpm | 839 kB 00:02
(5/7): python36u-setuptools-39.0.1-1.ius.centos7.noarch.rp | 642 kB 00:01
(6/7): python36u-pip-9.0.1-1.ius.centos7.noarch.rpm | 1.8 MB 00:02
(7/7): python36u-libs-3.6.5-1.ius.centos7.x86_64.rpm | 8.7 MB 00:02
--------------------------------------------------------------------------------
Total 4.7 MB/s | 14 MB 00:02
Retrieving key from file:///etc/pki/rpm-gpg/IUS-COMMUNITY-GPG-KEY
Importing GPG key 0x9CD4953F:
Userid : "IUS Community Project <coredev@iuscommunity.org>"
Fingerprint: 8b84 6e3a b3fe 6462 74e8 670f da22 1cdf 9cd4 953f
Package : ius-release-1.0-15.ius.centos7.noarch (@/ius-release)
From : /etc/pki/rpm-gpg/IUS-COMMUNITY-GPG-KEY
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : 1:openssl-libs-1.0.2k-12.el7.x86_64 1/9
Installing : python36u-libs-3.6.5-1.ius.centos7.x86_64 2/9
Installing : python36u-3.6.5-1.ius.centos7.x86_64 3/9
Installing : python36u-setuptools-39.0.1-1.ius.centos7.noarch 4/9
Installing : python36u-pip-9.0.1-1.ius.centos7.noarch 5/9
Installing : python36u-devel-3.6.5-1.ius.centos7.x86_64 6/9
Updating : 1:openssl-1.0.2k-12.el7.x86_64 7/9
Cleanup : 1:openssl-1.0.1e-51.el7_2.7.x86_64 8/9
Cleanup : 1:openssl-libs-1.0.1e-51.el7_2.7.x86_64 9/9
Verifying : python36u-3.6.5-1.ius.centos7.x86_64 1/9
Verifying : python36u-libs-3.6.5-1.ius.centos7.x86_64 2/9
Verifying : python36u-setuptools-39.0.1-1.ius.centos7.noarch 3/9
Verifying : python36u-devel-3.6.5-1.ius.centos7.x86_64 4/9
Verifying : python36u-pip-9.0.1-1.ius.centos7.noarch 5/9
Verifying : 1:openssl-1.0.2k-12.el7.x86_64 6/9
Verifying : 1:openssl-libs-1.0.2k-12.el7.x86_64 7/9
Verifying : 1:openssl-libs-1.0.1e-51.el7_2.7.x86_64 8/9
Verifying : 1:openssl-1.0.1e-51.el7_2.7.x86_64 9/9
Installed:
python36u.x86_64 0:3.6.5-1.ius.centos7
python36u-devel.x86_64 0:3.6.5-1.ius.centos7
python36u-pip.noarch 0:9.0.1-1.ius.centos7
Dependency Installed:
python36u-libs.x86_64 0:3.6.5-1.ius.centos7
python36u-setuptools.noarch 0:39.0.1-1.ius.centos7
Dependency Updated:
openssl.x86_64 1:1.0.2k-12.el7 openssl-libs.x86_64 1:1.0.2k-12.el7
Complete!
[root@ts_server ~]#
無事にインストール完了。
Python 2.7 のインストール
Python 2.7 はデフォルトでインストール済みだけど、
拡張モジュールのインストールに必要な開発環境と、pip コマンドをインストールをする。
[root@ts_server ~]# yum -y install yum install python2-devel python2-pip
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: ftp.iij.ad.jp
* epel: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* ius: hkg.mirror.rackspace.com
* updates: ftp.iij.ad.jp
No package install available.
Resolving Dependencies
--> Running transaction check
---> Package python-devel.x86_64 0:2.7.5-69.el7_5 will be installed
--> Processing Dependency: python(x86-64) = 2.7.5-69.el7_5 for package: python-devel-2.7.5-69.el7_5.x86_64
---> Package python2-pip.noarch 0:8.1.2-6.el7 will be installed
--> Processing Dependency: python-setuptools for package: python2-pip-8.1.2-6.el7.noarch
---> Package yum.noarch 0:3.4.3-132.el7.centos.0.1 will be updated
---> Package yum.noarch 0:3.4.3-158.el7.centos will be an update
--> Processing Dependency: rpm >= 4.11.3-22 for package: yum-3.4.3-158.el7.centos.noarch
--> Processing Dependency: python-urlgrabber >= 3.10-8 for package: yum-3.4.3-158.el7.centos.noarch
--> Running transaction check
---> Package python.x86_64 0:2.7.5-39.el7_2 will be updated
---> Package python.x86_64 0:2.7.5-69.el7_5 will be an update
--> Processing Dependency: python-libs(x86-64) = 2.7.5-69.el7_5 for package: python-2.7.5-69.el7_5.x86_64
---> Package python-setuptools.noarch 0:0.9.8-7.el7 will be installed
--> Processing Dependency: python-backports-ssl_match_hostname for package: python-setuptools-0.9.8-7.el7.noarch
---> Package python-urlgrabber.noarch 0:3.10-7.el7 will be updated
---> Package python-urlgrabber.noarch 0:3.10-8.el7 will be an update
---> Package rpm.x86_64 0:4.11.3-17.el7 will be updated
--> Processing Dependency: rpm = 4.11.3-17.el7 for package: rpm-libs-4.11.3-17.el7.x86_64
--> Processing Dependency: rpm = 4.11.3-17.el7 for package: rpm-python-4.11.3-17.el7.x86_64
--> Processing Dependency: rpm = 4.11.3-17.el7 for package: rpm-build-4.11.3-17.el7.x86_64
---> Package rpm.x86_64 0:4.11.3-32.el7 will be an update
--> Running transaction check
---> Package python-backports-ssl_match_hostname.noarch 0:3.5.0.1-1.el7 will be installed
--> Processing Dependency: python-ipaddress for package: python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch
--> Processing Dependency: python-backports for package: python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch
---> Package python-libs.x86_64 0:2.7.5-39.el7_2 will be updated
---> Package python-libs.x86_64 0:2.7.5-69.el7_5 will be an update
---> Package rpm-build.x86_64 0:4.11.3-17.el7 will be updated
---> Package rpm-build.x86_64 0:4.11.3-32.el7 will be an update
---> Package rpm-libs.x86_64 0:4.11.3-17.el7 will be updated
--> Processing Dependency: rpm-libs(x86-64) = 4.11.3-17.el7 for package: rpm-build-libs-4.11.3-17.el7.x86_64
---> Package rpm-libs.x86_64 0:4.11.3-32.el7 will be an update
---> Package rpm-python.x86_64 0:4.11.3-17.el7 will be updated
---> Package rpm-python.x86_64 0:4.11.3-32.el7 will be an update
--> Running transaction check
---> Package python-backports.x86_64 0:1.0-8.el7 will be installed
---> Package python-ipaddress.noarch 0:1.0.16-2.el7 will be installed
---> Package rpm-build-libs.x86_64 0:4.11.3-17.el7 will be updated
--> Processing Dependency: rpm-build-libs(x86-64) = 4.11.3-17.el7 for package: rpm-sign-4.11.3-17.el7.x86_64
---> Package rpm-build-libs.x86_64 0:4.11.3-32.el7 will be an update
--> Running transaction check
---> Package rpm-sign.x86_64 0:4.11.3-17.el7 will be updated
---> Package rpm-sign.x86_64 0:4.11.3-32.el7 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository
Size
================================================================================
Installing:
python-devel x86_64 2.7.5-69.el7_5 updates 397 k
python2-pip noarch 8.1.2-6.el7 epel 1.7 M
Updating:
yum noarch 3.4.3-158.el7.centos base 1.2 M
Installing for dependencies:
python-backports x86_64 1.0-8.el7 base 5.8 k
python-backports-ssl_match_hostname noarch 3.5.0.1-1.el7 base 13 k
python-ipaddress noarch 1.0.16-2.el7 base 34 k
python-setuptools noarch 0.9.8-7.el7 base 397 k
Updating for dependencies:
python x86_64 2.7.5-69.el7_5 updates 93 k
python-libs x86_64 2.7.5-69.el7_5 updates 5.6 M
python-urlgrabber noarch 3.10-8.el7 base 108 k
rpm x86_64 4.11.3-32.el7 base 1.2 M
rpm-build x86_64 4.11.3-32.el7 base 147 k
rpm-build-libs x86_64 4.11.3-32.el7 base 105 k
rpm-libs x86_64 4.11.3-32.el7 base 276 k
rpm-python x86_64 4.11.3-32.el7 base 82 k
rpm-sign x86_64 4.11.3-32.el7 base 47 k
Transaction Summary
================================================================================
Install 2 Packages (+4 Dependent packages)
Upgrade 1 Package (+9 Dependent packages)
Total download size: 11 M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/16): python-backports-1.0-8.el7.x86_64.rpm | 5.8 kB 00:00
(2/16): python-2.7.5-69.el7_5.x86_64.rpm | 93 kB 00:00
(3/16): python-backports-ssl_match_hostname-3.5.0.1-1.el7. | 13 kB 00:00
(4/16): python-ipaddress-1.0.16-2.el7.noarch.rpm | 34 kB 00:00
(5/16): python-devel-2.7.5-69.el7_5.x86_64.rpm | 397 kB 00:00
(6/16): python-setuptools-0.9.8-7.el7.noarch.rpm | 397 kB 00:00
(7/16): python-urlgrabber-3.10-8.el7.noarch.rpm | 108 kB 00:00
(8/16): rpm-build-libs-4.11.3-32.el7.x86_64.rpm | 105 kB 00:00
(9/16): rpm-build-4.11.3-32.el7.x86_64.rpm | 147 kB 00:00
(10/16): python2-pip-8.1.2-6.el7.noarch.rpm | 1.7 MB 00:00
(11/16): rpm-libs-4.11.3-32.el7.x86_64.rpm | 276 kB 00:00
(12/16): rpm-python-4.11.3-32.el7.x86_64.rpm | 82 kB 00:00
(13/16): rpm-sign-4.11.3-32.el7.x86_64.rpm | 47 kB 00:00
(14/16): yum-3.4.3-158.el7.centos.noarch.rpm | 1.2 MB 00:00
(15/16): python-libs-2.7.5-69.el7_5.x86_64.rpm | 5.6 MB 00:01
(16/16): rpm-4.11.3-32.el7.x86_64.rpm | 1.2 MB 00:00
--------------------------------------------------------------------------------
Total 6.2 MB/s | 11 MB 00:01
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : rpm-4.11.3-32.el7.x86_64 1/26
Updating : rpm-libs-4.11.3-32.el7.x86_64 2/26
Updating : rpm-build-libs-4.11.3-32.el7.x86_64 3/26
Updating : python-libs-2.7.5-69.el7_5.x86_64 4/26
Updating : python-2.7.5-69.el7_5.x86_64 5/26
Updating : python-urlgrabber-3.10-8.el7.noarch 6/26
Installing : python-backports-1.0-8.el7.x86_64 7/26
Updating : rpm-python-4.11.3-32.el7.x86_64 8/26
Installing : python-ipaddress-1.0.16-2.el7.noarch 9/26
Installing : python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch 10/26
Installing : python-setuptools-0.9.8-7.el7.noarch 11/26
Installing : python2-pip-8.1.2-6.el7.noarch 12/26
Updating : yum-3.4.3-158.el7.centos.noarch 13/26
Installing : python-devel-2.7.5-69.el7_5.x86_64 14/26
Updating : rpm-sign-4.11.3-32.el7.x86_64 15/26
Updating : rpm-build-4.11.3-32.el7.x86_64 16/26
Cleanup : yum-3.4.3-132.el7.centos.0.1.noarch 17/26
Cleanup : rpm-python-4.11.3-17.el7.x86_64 18/26
Cleanup : rpm-build-4.11.3-17.el7.x86_64 19/26
Cleanup : rpm-sign-4.11.3-17.el7.x86_64 20/26
Cleanup : python-urlgrabber-3.10-7.el7.noarch 21/26
Cleanup : python-2.7.5-39.el7_2.x86_64 22/26
Cleanup : rpm-build-libs-4.11.3-17.el7.x86_64 23/26
Cleanup : rpm-4.11.3-17.el7.x86_64 24/26
Cleanup : rpm-libs-4.11.3-17.el7.x86_64 25/26
Cleanup : python-libs-2.7.5-39.el7_2.x86_64 26/26
Verifying : rpm-sign-4.11.3-32.el7.x86_64 1/26
Verifying : python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch 2/26
Verifying : rpm-build-libs-4.11.3-32.el7.x86_64 3/26
Verifying : python-setuptools-0.9.8-7.el7.noarch 4/26
Verifying : python-urlgrabber-3.10-8.el7.noarch 5/26
Verifying : python2-pip-8.1.2-6.el7.noarch 6/26
Verifying : yum-3.4.3-158.el7.centos.noarch 7/26
Verifying : python-libs-2.7.5-69.el7_5.x86_64 8/26
Verifying : rpm-build-4.11.3-32.el7.x86_64 9/26
Verifying : python-backports-1.0-8.el7.x86_64 10/26
Verifying : python-2.7.5-69.el7_5.x86_64 11/26
Verifying : python-devel-2.7.5-69.el7_5.x86_64 12/26
Verifying : rpm-python-4.11.3-32.el7.x86_64 13/26
Verifying : python-ipaddress-1.0.16-2.el7.noarch 14/26
Verifying : rpm-libs-4.11.3-32.el7.x86_64 15/26
Verifying : rpm-4.11.3-32.el7.x86_64 16/26
Verifying : rpm-sign-4.11.3-17.el7.x86_64 17/26
Verifying : rpm-build-libs-4.11.3-17.el7.x86_64 18/26
Verifying : python-2.7.5-39.el7_2.x86_64 19/26
Verifying : rpm-build-4.11.3-17.el7.x86_64 20/26
Verifying : rpm-4.11.3-17.el7.x86_64 21/26
Verifying : rpm-libs-4.11.3-17.el7.x86_64 22/26
Verifying : python-libs-2.7.5-39.el7_2.x86_64 23/26
Verifying : yum-3.4.3-132.el7.centos.0.1.noarch 24/26
Verifying : rpm-python-4.11.3-17.el7.x86_64 25/26
Verifying : python-urlgrabber-3.10-7.el7.noarch 26/26
Installed:
python-devel.x86_64 0:2.7.5-69.el7_5 python2-pip.noarch 0:8.1.2-6.el7
Dependency Installed:
python-backports.x86_64 0:1.0-8.el7
python-backports-ssl_match_hostname.noarch 0:3.5.0.1-1.el7
python-ipaddress.noarch 0:1.0.16-2.el7
python-setuptools.noarch 0:0.9.8-7.el7
Updated:
yum.noarch 0:3.4.3-158.el7.centos
Dependency Updated:
python.x86_64 0:2.7.5-69.el7_5 python-libs.x86_64 0:2.7.5-69.el7_5
python-urlgrabber.noarch 0:3.10-8.el7 rpm.x86_64 0:4.11.3-32.el7
rpm-build.x86_64 0:4.11.3-32.el7 rpm-build-libs.x86_64 0:4.11.3-32.el7
rpm-libs.x86_64 0:4.11.3-32.el7 rpm-python.x86_64 0:4.11.3-32.el7
rpm-sign.x86_64 0:4.11.3-32.el7
Complete!
[root@ts_server ~]#
無事にインストール完了。
Pythonの実行確認
Python各バージョンは次のコマンドで実行
- Python3.6の起動
[root@ts_server ~]# python3.6
Python 3.6.5 (default, Apr 10 2018, 17:08:37)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> help
Type help() for interactive help, or help(object) for help about object.
>>>
[root@ts_server ~]#
- Python2.7.5の起動
[root@ts_server ~]# python
Python 2.7.5 (default, Jul 13 2018, 13:06:57)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> help
Type help() for interactive help, or help(object) for help about object.
>>>
[root@ts_server ~]#
どちらも起動確認までは完了。
仮想環境
Python2とPython3と切り分けて使いたいので、仮想環境を入れておく。
Virtualenvを導入する。
[root@ts_server ~]# python3.6 -m pip install virtualenv
Collecting virtualenv
Downloading https://files.pythonhosted.org/packages/b6/30/96a02b2287098b23b875bc8c2f58071c35d2efe84f747b64d523721dc2b5/virtualenv-16.0.0-py2.py3-none-any.whl (1.9MB)
100% |################################| 1.9MB 459kB/s
Installing collected packages: virtualenv
Successfully installed virtualenv-16.0.0
You are using pip version 9.0.1, however version 18.0 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
[root@ts_server ~]#
適当な作業フォルダを作成する。
[root@ts_server ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/vda4 100138988 1778952 98360036 2% /
devtmpfs 499032 0 499032 0% /dev
tmpfs 508380 0 508380 0% /dev/shm
tmpfs 508380 13060 495320 3% /run
tmpfs 508380 0 508380 0% /sys/fs/cgroup
/dev/vda2 508588 135904 372684 27% /boot
tmpfs 101676 0 101676 0% /run/user/0
tmpfs 101676 0 101676 0% /run/user/1000
[root@ts_server ~]#
[root@ts_server ~]# cd /opt
[root@ts_server opt]# pwd
/opt
[root@ts_server opt]# ls -ltr
total 0
drwxr-xr-x. 2 root root 6 Mar 26 2015 rh
[root@ts_server opt]# mkdir python_run
[root@ts_server opt]# chmod 777 python_run
[root@ts_server opt]# cd python_run
[root@ts_server python_run]# pwd
/opt/python_run
[root@ts_server python_run]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/vda4 100138988 1810936 98328052 2% /
devtmpfs 499032 0 499032 0% /dev
tmpfs 508380 0 508380 0% /dev/shm
tmpfs 508380 13060 495320 3% /run
tmpfs 508380 0 508380 0% /sys/fs/cgroup
/dev/vda2 508588 135904 372684 27% /boot
tmpfs 101676 0 101676 0% /run/user/0
tmpfs 101676 0 101676 0% /run/user/1000
[root@ts_server python_run]#
仮想環境作成コマンド実行
[root@ts_server python_run]# virtualenv py3env
Using base prefix '/usr'
New python executable in /opt/python_run/py3env/bin/python3.6
Also creating executable in /opt/python_run/py3env/bin/python
Installing setuptools, pip, wheel...done.
[root@ts_server python_run]#
仮想環境アクティベート
[root@ts_server python_run]# . ./py3env/bin/activate
(py3env) [root@ts_server python_run]#
アクティベートした状態でPython起動すると、仮想環境のバージョン(今回だとPython3.6.5)が起動する。
(py3env) [root@ts_server python_run]# python
Python 3.6.5 (default, Apr 10 2018, 17:08:37)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
この仮想環境にはパッケージのインストールなども出来るけど、元のPythonには手は加わらない。
プロジェクトごとに分けたい場合に有効だと思う。
戻る時はdeactivateする。
>>>
(py3env) [root@ts_server python_run]# deactivate
[root@ts_server python_run]#
Python2.7にも仮想環境を入れておく。
[root@ts_server python_run]# python2.7 -m pip install virtualenv
Collecting virtualenv
Using cached https://files.pythonhosted.org/packages/b6/30/96a02b2287098b23b875bc8c2f58071c35d2efe84f747b64d523721dc2b5/virtualenv-16.0.0-py2.py3-none-any.whl
Installing collected packages: virtualenv
Successfully installed virtualenv-16.0.0
You are using pip version 8.1.2, however version 18.0 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
[root@ts_server python_run]#
Python2.7の仮想環境も作ってみる。
[root@ts_server python_run]# python2.7 -m virtualenv py27env
New python executable in /opt/python_run/py27env/bin/python2.7
Also creating executable in /opt/python_run/py27env/bin/python
Installing setuptools, pip, wheel...done.
[root@ts_server python_run]#
[root@ts_server python_run]# ls -l
total 0
drwxr-xr-x 5 root root 77 Sep 23 00:46 py27env
drwxr-xr-x 5 root root 77 Sep 23 00:27 py3env
[root@ts_server python_run]#
アクティベートして、Pythonを起動できる事を確認する。
[root@ts_server python_run]# . py27env/bin/activate
(py27env) [root@ts_server python_run]# python
Python 2.7.5 (default, Jul 13 2018, 13:06:57)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>>
(py27env) [root@ts_server python_run]# deactivate
[root@ts_server python_run]#
環境構築はここまで。
PythonJapanの通りにコマンド叩いたら特に引っかかるとこなしでした。