測試環境為 CentOS 8 x86_64 (虛擬機)
安裝 Python (與 pip , Python 套件管理程式)
[root@localhost ~]# yum install python Last metadata expiration check: 0:11:09 ago on Tue May 10 23:09:33 2022. No match for argument: python There are following alternatives for "python": python2, python36, python38, python39 Error: Unable to find a match: python [root@localhost ~]# yum -y install python39 Last metadata expiration check: 0:11:20 ago on Tue May 10 23:09:33 2022. Dependencies resolved. ================================================================================================================= Package Architecture Version Repository Size ================================================================================================================= Installing: python39 x86_64 3.9.7-1.module_el8.6.0+930+10acc06f appstream 33 k Installing dependencies: python39-libs x86_64 3.9.7-1.module_el8.6.0+930+10acc06f appstream 8.2 M python39-pip-wheel noarch 20.2.4-6.module_el8.6.0+930+10acc06f appstream 1.3 M python39-setuptools-wheel noarch 50.3.2-4.module_el8.6.0+930+10acc06f appstream 497 k Installing weak dependencies: python39-pip noarch 20.2.4-6.module_el8.6.0+930+10acc06f appstream 2.0 M python39-setuptools noarch 50.3.2-4.module_el8.6.0+930+10acc06f appstream 871 k Enabling module streams: python39 3.9 Transaction Summary ================================================================================================================= Install 6 Packages
檢視一下 python 版本.
[root@localhost ~]# python3 --version Python 3.6.8
以及 pip 預設安裝了哪些套件.
[root@localhost ~]# pip pip-3 pip-3.9 pip3.6 pipewire pip-3.6 pip3 pip3.9 pipewire-media-session [root@localhost ~]# pip3 list DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning. asn1crypto (0.24.0) blivet (3.4.0) Brlapi (0.6.7) cffi (1.11.5) chardet (3.0.4) .... SSSDConfig (2.6.2) subscription-manager (1.28.28) syspurpose (1.28.28) systemd-python (234) urllib3 (1.24.2) webencodings (0.5.1)
簡單的 python 程式,只有透過 print 函數列印出 Hello .
[root@localhost ~]# vim hello.py print ('Hello')
執行 Python 程式.
[root@localhost ~]# python3 hello.py Hello
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