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Today, I would like to share with you how to compile and install Python 3.8.0 under CentOS 7.6. the content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article.

1. First, let's take a look at the system version [root@python3 ~] # cat / etc/redhat-release CentOS Linux release 7.6.1810 (Core) 2. Update the yum source. I use Ali Cloud's source [root@python3 ~] # cd / etc/yum.repos.d/ [root@python3 yum.repos.d] # mkdir bak [root@python3 yum.repos.d] # mv * bak [root@python3 yum.repos.d] # wget http://mirrors.aliyun.com/repo/Centos-7.repo [root@python3 yum.repos.d] # wget http://mirrors.aliyun.com/repo/epel-7.repo3. here. You need to install some dependencies before installing python3.7, which is why the above update yum source [root@python3 ~] # yum-y install zlib-devel bzip2-devel openssl-devel openssl-static ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel lzma gcc may not report an error if it is not installed, but it will not report an error if installed, and Ann will not install it itself.

4. There are many ways to download the python3.7 installation package. Here I use wget to download [root@python3 ~] # cd / usr/local/src/ [root@python3 src] # wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz directly from the official website to download the installation package to the / usr/local/src/ directory.

5. Extract & & move [root@python3 src] # tar xvf Python-3.7.0.tar.xz [root@python3 src] # mv Python-3.7.0 / usr/local/python-3.7 [root@python3 src] # cd / usr/local/python-3.7/6. Install & & compile [root@python3 python-3.7] #. / configure-- prefix=/usr/local/sbin/python-3.7 installs python3.7 into the / usr/local/sbin/python-3.7 directory

After the installation of [root@python3 python-3.7] # make & & make install is completed, if the following two lines appear, the installation is successful

Installing collected packages: setuptools, pip Successfully installed pip-10.0.1 setuptools-39.0.17. After successful installation, you can use [root@python3 python-3.7] # / usr/local/sbin/python-3.7/bin/python3Python 3.7.0 (default, Mar 15 2019, 00:44:37) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linuxType "help", "copyright", "credits" or "license" for more information. > > [the command exit () exited here] works. But the command is not convenient to use for a long time. The we konw system itself comes with python. Take a look at the version [root@python3 ~] # python-VPython 2.7.58. Take a look at the absolute path of the python command [root@python3 ~] # which python/usr/bin/python [root@python3 ~] # ll / usr/bin/ | grep python-rwxr-xr-x. 1 root root 11312 Nov 14 00:00 abrt-action-analyze-pythonlrwxrwxrwx. 1 root root 7 Mar 14 18:19 python-> python2lrwxrwxrwx. 1 root root 9 Mar 14 18:19 python2-> python2.7-rwxr-xr-x. 1 root root 7216 Oct 31 07:46 python2.7 can see that the python command is connected to python2.7 through a soft link. [young operator] well, now that we have installed python3.7, can we make a soft link to the python command to python3? the answer is yes.

9. Soft link the python command to the python3 command (the list of / usr/local/sbin/python-3.7/bin/python3 above) [root@python3 ~] # rm-rf / usr/bin/python [root@python3 ~] # ln-sv / usr/local/sbin/python-3.7/bin/python3 / usr/bin/python' / usr/bin/python'->'/ usr/local/sbin/python-3.7/bin/python3 '[root@python3 ~] # ll / usr/bin/ | grep python-rwxr-xr-x. 1 root root 11312 Nov 14 00:00 abrt-action-analyze-python lrwxrwxrwx. 1 root root 38 Mar 14 19:24 python- > / usr/local/sbin/python-3.7/bin/python3 lrwxrwxrwx. 1 root root 9 Mar 14 18:19 python2-> python2.7-rwxr-xr-x. 1 root root 7216 Oct 31 07:46 python2.710. Check out the current default version [root@python3 ~] # python-V Python 3.7.011. After you modify the default version of python, you will not be able to execute the yum command. Some modifications are needed. As follows: ① changes the top of / usr/bin/yum from:! / usr/bin/python to! / usr/bin/python2.7 ② changes the top of / usr/libexec/urlgrabber-ext-down to: / usr/bin/python to / usr/bin/python2.7 ③ and the top of / usr/bin/yum-config-manager to #! / usr/bin/python to #! / usr/bin/python2.712. Finally, point pip to python3.7 [root@python3 ~] # ln-s / usr/local/sbin/python-3.7/bin/pip3 / usr/bin/pip [root@python3 ~] # pip-- version pip 10.0.1 from / usr/local/sbin/python-3.7/lib/python3.7/site-packages/pip (python3.7) is all the contents of this article "how to compile and install Python 3.8.0 under CentOS 7.6". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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