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---- Updated at 2022-04-06
- Python3.11即将出正式版，yum install -y python3得到的有可能是3.8或者3.9版的
- 其他版本的优先尝试yum install python3.x的方式安装，不行的话，再去华为源下载源码包手动安装
---- Updated at 2020-03-01
Python最新版为3.8.1，安装时只要把2017-5-14总结里面的3.6.1全部替换掉即可安装最新版的python3.8
安装3.6的话，现在只需要
sudo yum update && sudo yum install -y python3
系统centos6.7，已有python2.6、python2.7、python3.5
打算再安装3.6
主要步骤如下(2017-5-14 总结）：
wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
tar -zxvf Python-3.6.1.tgz
cd Python-3.6.1
./configure --enable-shared
make && make altinstall
过程如下（2017-4-13 经历）：
[willie@localhost ~]$ su
Password:
[root@localhost willie]# cd /opt
[root@localhost opt]# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
--2017-04-25 13:59:30-- https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
Resolving www.python.org... 151.101.72.223, 2a04:4e42:11::223
Connecting to www.python.org|151.101.72.223|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 22540566 (21M) [application/octet-stream]
Saving to: “Python-3.6.1.tgz”
18% [======> ] 4,110,850 8.20K/s in 11m 48s
2017-04-25 14:11:22 (5.67 KB/s) - Connection closed at byte 4110850. Retrying.
--2017-04-25 14:11:23-- (try: 2) https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
Connecting to www.python.org|151.101.72.223|:443... connected.
HTTP request sent, awaiting response... 206 Partial Content
Length: 22540566 (21M), 18429716 (18M) remaining [application/octet-stream]
Saving to: “Python-3.6.1.tgz”
87% [+++++++==========================> ] 19,734,058 12.5K/s in 78m 20s
2017-04-25 15:29:44 (3.25 KB/s) - Connection closed at byte 19734058. Retrying.
--2017-04-25 15:29:46-- (try: 3) https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
Connecting to www.python.org|151.101.72.223|:443... connected.
HTTP request sent, awaiting response... 206 Partial Content
Length: 22540566 (21M), 2806508 (2.7M) remaining [application/octet-stream]
Saving to: “Python-3.6.1.tgz”
100%[++++++++++++++++++++++++++++++++++====>] 22,540,566 37.0K/s in 82s
2017-04-25 15:31:08 (33.5 KB/s) - “Python-3.6.1.tgz” saved [22540566/22540566]
[root@localhost opt]# tar -zxvf Python-3.6.1.tgz
。。。
[root@localhost opt]# cd Python-3.6.1
[root@localhost Python-3.6.1]# ./configure --prefix=/opt/Python-361 --enable-shared #--prefix=安装的目标文件夹 --enable-shared不加这个的话可能导致pyinstaller运行出错
[root@localhost Python-3.6.1]# make && make install
[root@localhost Python-3.6.1]# ln -s /opt/Python-361/bin/python3.6 /usr/bin/python36
[root@localhost Python-3.6.1]# ln -s /opt/Python-361/bin/python3.6 /usr/bin/python361
OK！安装完成，需要用3.6版运行脚本的话，python3.6 xxx.py 就行了。
