CentOS7系統默認安裝了python2.7
$ python --version
Python 2.7.5
怎麼安裝python3?
下載python3安裝包
$ wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz
--2018-11-27 15:16:23-- https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz
正在解析主機 www.python.org (www.python.org)... 151.101.108.223, 2a04:4e42:1a::223
正在連接 www.python.org (www.python.org)|151.101.108.223|:443... 已連接。
已發出 HTTP 請求,正在等待迴應... 200 OK
長度:22673115 (22M) [application/octet-stream]
正在保存至: “Python-3.6.3.tgz”
100%[====================================================================================================================================>] 22,673,115 3.94MB/s 用時 21s
2018-11-27 15:16:45 (1.02 MB/s) - 已保存 “Python-3.6.3.tgz” [22673115/22673115])
$ ls
Python-3.6.3.tgz
$ tar -xvf Python-3.6.3.tgz
$ ls
Python-3.6.3 Python-3.6.3.tgz
$ cd Python-3.6.3
$ ls
aclocal.m4 config.sub configure.ac Grammar install-sh LICENSE Makefile.pre.in Modules Parser PCbuild pyconfig.h.in README.rst Tools
config.guess configure Doc Include Lib Mac Misc Objects PC Programs Python setup.py
執行配置
$ ./configure
執行編譯
make
執行安裝
make install
如果需要安裝失敗的提示:
Traceback (most recent call last):
File "/root/downloads/Python-3.6.3/Lib/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/root/downloads/Python-3.6.3/Lib/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/root/downloads/Python-3.6.3/Lib/ensurepip/__main__.py", line 4, in <module>
ensurepip._main()
File "/root/downloads/Python-3.6.3/Lib/ensurepip/__init__.py", line 189, in _main
default_pip=args.default_pip,
File "/root/downloads/Python-3.6.3/Lib/ensurepip/__init__.py", line 102, in bootstrap
_run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
File "/root/downloads/Python-3.6.3/Lib/ensurepip/__init__.py", line 27, in _run_pip
import pip
zipimport.ZipImportError: can't decompress data; zlib not available
需要安裝Development tools
和zlib
相關工具
$ yum groupinstall "Development tools"
$ yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-develtk-devel gdbm-devel db4-devel libpcap-devel xz-devel
執行完後再執行安裝make install
至此,安裝完成。查看python3版本
$ python3 --version
Python 3.6.3