MAC 上升级python为最新版本

第1步：下载Python3.4



下载地址如下：



下载Mac OS X 64-bit/32-bit installer

https://www.python.org/downloads/release/python-340/





第2步: 安装



安装下载的dmg文件





第3步: 配置  创建下面的script， 改下版本号即可

[plain] view plaincopy在CODE上查看代码片派生到我的代码片

#!/bin/bash  

#python版号需要修改两个地方  

#1. new_version  

  

#sudo -i #得到超级权限  

new_version="3.4"  

  

PYPATH=/System/Library/Frameworks/Python.framework/Versions/"$new_version"  

#第1步移动新版python到mac默认目录下  

echo "move.."  

mv /Library/Frameworks/Python.framework/Versions/"$new_version" /System/Library/Frameworks/Python.framework/Versions/  

#第2步改变用户目录的用户组  

echo "chown.."  

chown -R root:wheel ${PYPATH}  

#第3步 删除原来2.7的链接  

echo "del.."  

rm /System/Library/Frameworks/Python.framework/Versions/Current  

#第4步重新链接到最新版本的python  

echo "ln.."  

ln -s ${PYPATH} /System/Library/Frameworks/Python.framework/Versions/Current  

#第5步删除旧的命令符号链接  

echo "rm.."  

rm /usr/bin/{pydoc,python,pythonw,python-config}  

echo "ln bin.."  

#第6步重新建立新的命令符号链接  

ln -s ${PYPATH}/bin/pydoc"$new_version" /usr/bin/pydoc  

ln -s ${PYPATH}/bin/python"$new_version" /usr/bin/python  

ln -s ${PYPATH}/bin/pythonw"$new_version" /usr/bin/pythonw  

ln -s ${PYPATH}/bin/python"$new_version"m-config /usr/bin/python-config  

  

  

python_param_list=`cd /usr/local/bin && ls -al |grep "Python"|awk 'ORS=" " {print $9}'`  

#第7步修复其他链接  

for i in $python_param_list;do  

  echo "info: $i"  

  rm -f /usr/local/bin/${i}  

  ln -sv /System/Library/Frameworks/Python.framework/Versions/"$new_version"/bin/${i} /usr/local/bin/${i}  

done  

  

#第8步.环境变量要修改为最新的版本号  

echo 'export PATH=/System/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}' >> ~/.bashrc  

  

exit #退出超级权限  



查看当前python版本

[html] view plaincopy

bixiaopeng@bixiaopengtekiMacBook-Pro ~$ python --version