Linux下python3/2.7安装
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文章目录
0 安装包手动下载
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1 安装python3
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 libffi-devel
wget https://www.python.org/ftp/python/3.9.5/Python-3.9.5.tgz
tar -zxvf Python-3.9.5.tgz
cd Python-3.9.5
./configure --prefix=/usr/local/python3
make && make install
ln -s /usr/local/python3/bin/python3.9 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3.9 /usr/bin/pip3
cd /etc/profile.d/
vim python3.sh
内容:
export PATH="$PATH:/usr/local/python3/bin"
环境变量生效
补包:
yum -y install openssl-devel
apt-get install yum
2 安装python2.7
1、下载python#
wget https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tgz
2、解压、编译安装(依次执行以下5条命令)#
tar -zxvf Python-2.7.9.tgz
cd Python-2.7.9
./configure --prefix=/usr/local/python-2.7.9
make
make install
3、系统自带了python版本,我们需要为新安装的版本添加一个软链#
ln -s /usr/local/python-2.7.9/bin/python /usr/bin/python2.7
4、若需使用该版本,只需输入"python2.7.9 + 空格 + py脚本"#
python2.7 ~/helloworld.py
【可选】#
假若想用python运行脚本,而不是python2.7,运行以下指令即可完成修改:
ln -s /usr/local/python-2.7.9/bin/python /usr/bin/python