python安装

mac

brew install python

pyenv 虚拟环境

brew install pyenv

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zshrc
2echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
3echo 'eval "$(pyenv init -)"' >> ~/.zshrc

source ~/.zshrc

pyenv install 3.12.2      # 安装指定版本
pyenv global 3.12.2       # 设为全局默认
python --version          # 查看当前版本

venv

Python 3.3+ 内置的虚拟环境管理工具

python3 -m venv myenv
source myenv/bin/activate
deactivate # 取消

window

使用操作系统的 powershell 执行一下命令

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
Invoke-RestMethod -Uri https://get.scoop.sh | Invoke-Expression

安装python

scoop search python 
scoop install python

安装pyenv-win

scoop install pyenv

centOS安装

#创建一个python3目录
mkdir /home/python3
#下载python3.6.8安装包
wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tgz
#下载完成之后，将安装包解压到当前目录： tar xvf Python-3.6.8.tgz
# 安装依赖
yum -y install vim unzip net-tools && yum -y install wget && yum -y install bzip2 && 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 && yum -y install libglvnd-glx && yum -y install gcc gcc-c++


#先进入Python3目录下的Python-3.6.8目录： 
cd Python-3.6.8 
#指定python3安装路径： 
./configure --prefix=/usr/local/python3.6

#编译+安装 
make && make install

#添加python3软链接：
ln -s /usr/local/python3.6/bin/python3.6 /usr/bin/python3
#添加pip3软链接：
ln -s /usr/local/python3.6/bin/pip3 /usr/bin/pip3