Python3.x安装

一、PYTHON安装

1.安装或是升级Python3

下载地址：wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz

学习注意事项：Python3与Python2互不兼容

[root@tansk ~]# mkdir -p /opt/python3
[root@tansk ~]# cd /opt/python3
[root@tansk python3]# yum install lrzsz-0.12.20-36.el7.x86_64 -y
[root@tansk python3]# chmod 755 Python-3.7.2.tgz 
[root@tansk python3]# tar -zxvf Python-3.7.2.tgz 
[root@tansk python3]# cd Python-3.7.2/
[root@tansk Python-3.7.2]# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite sqlite-devel readline-devel tk tk-devel gdbm gdbm-devel db4-devel libpcap-devel lzma xz xz-devel libuuid-devel libffi-devel
[root@tansk Python-3.7.2]# vim Modules/Setup.dist
去掉注释：
zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz
[root@tansk Python-3.7.2]# ./configure --prefix=/usr/local/python3.7.2

编译报错如下：

解决该问题的两种方法：

方法一：使用libressl代替OpenSSL

安装LibreSSL代替OpenSSL

下载地址：https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.4.tar.gz

方法二：升级OpenSSL  #本次实验使用方法

下载地址： http://www.openssl.org/source/openssl-1.0.2.tar.gz

tar -zxvf openssl-1.0.2.tar.gz 
cd openssl-1.0.2/
./config --prefix=/usr/local/openssl
make  -j 8
make install 
mv /usr/bin/openssl /usr/bin/openssl.old
mv /usr/include/openssl /usr/include/openssl.old
ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/openssl/include/openssl/ /usr/include/openssl  
echo "/usr/local/openssl/lib">>/etc/ld.so.conf 
openssl version -a

[root@tansk ~]# cd /opt/python3/Python-3.7.2
[root@tansk Python-3.7.2]# rm -rf Makefile
[root@tansk Python-3.7.2]# ./configure --prefix=/usr/local/python3.7.2
[root@tansk Python-3.7.2]# make -j 8
[root@tansk Python-3.7.2]# make install
[root@tansk ~]# ln -s /usr/local/python3.7.2/bin/python3 /usr/bin/python3
[root@tansk ~]# ln -s /usr/local/python3.7.2/bin/pip3 /usr/bin/pip3
[root@tansk ~]# python3
Python 3.7.2 (default, May  8 2020, 21:49:18) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

2.sublime编辑器

下载地址：http://www.sublimetext.com/3

CentOS7(图形化系统)安装过程:

cd /opt/
unzip sublime_text_3.zip 
chmod 755 -R sublime_text_3/*
cp sublime_text_3/sublime_text.desktop /usr/share/applications/sublime_text.desktop
ln -s /opt/sublime_text_3/sublime_text /usr/bin/sublime
[root@localhost ~]# cat /usr/share/applications/sublime_text.desktop 
[Desktop Entry]
Version=1.0
Type=Application
Name=Sublime Text
GenericName=Text Editor
Comment=Sophisticated text editor for code, markup and prose
Exec=/opt/sublime_text_3/sublime_text %F
Terminal=false
MimeType=text/plain;
Icon=/opt/sublime_text_3/Icon/256x256/sublime-text.png
Categories=TextEditor;Development;
StartupNotify=true
Actions=Window;Document;

[Desktop Action Window]
Name=New Window
Exec=/opt/sublime_text_3/sublime_text -n
OnlyShowIn=Unity;

[Desktop Action Document]
Name=New File
Exec=/opt/sublime_text_3/sublime_text --command new_file
OnlyShowIn=Unity;
[root@localhost ~]# 
[root@localhost ~]# export DISPLAY=192.168.1.3:0.0
[root@localhost ~]# sublime