1、安装依赖包

[code]yum -y groupinstall "Development tools"

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

2、根据自己需求下载不同版本的Python3，我下载的是Python3.6.2

[code]wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz

3、解压压缩包，进入该目录，安装Python3

[code]tar -xvJf  Python-3.6.2.tar.xz

 4、进行Python3的编译安装（其中=后为安装的路径）

[code]./configure --prefix=/usr/python3

[code]make
make install

5、添加软链到执行目录下/usr/bin

[code]ln -s /usr/python3/bin/python3.6 /usr/bin/python3
ln -s /usr/python3/bin/pip3 /usr/bin/pip3

6、查看python和pip的版本

[code]python3 --version
pip3 --version

安装scrapy

1、pip安装

[code]pip3 install scrapy

判断是否有错误比如缺少ssl

使用命令：

[code]sudo yum install -y openssl-devel

进行安装，安装完成后用命令添加到python

[code]./configure --prefix=/usr/python3 --with-ssl

2、出现Successfully表明安装成功

3、添加到.bsahrc文件

9、编译.bsahrc文件及python3、scrapy.出现如下图即成功

[code]source .bashrc
python3
scrapy