Centos7下的Python3.7安装

安装

1. 相关依赖下载

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

2. python3.7安装

安装python3.7及以上版本直接安装会报错：
ModuleNotFoundError: No module named '_ctypes'
需先安装libffi-devel，在安装新版本python前可直接通过yum安装 
sudo yum install libffi-devel -y

若已经编译，yum还未重新配置无法正常使用，则通过wget自行下载安装包
wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libfontenc-devel-1.1.3-3.el7.x86_64.rpm
rpm -ivh libffi-devel-3.0.13-18.el7.x86_64.rpm

安装python3.8
wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4rc1.tgz
tar -xvf Python-3.7.4rc1.tgz
mv Python-3.7.4rc1 python3
cd python3
./configure --prefix=/home/python3
make
make install

配置软链接

1. pip

备份原软链接
sudo mv python python.bk
sudo mv pip pip.bk
创建新版本python软链接
sudo ln -s /home/python3/bin/python3 /usr/bin/python
sudo ln -s /home/python3/bin/pip3 /usr/bin/pip

2. yum

修改完python软链接后yum无法正常使用，需要重新配置
sudo vim /usr/bin/yum
#!/usr/bin/python 改为 #!/usr/bin/python2.7

测试

python

sudo yum search pip