第1步：下載Python3.4

下載地址如下：

下載Mac OS X 64-bit/32-bit installer

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

第2步: 安裝

安裝下載的dmg文件

第3步: 配置 創(chuàng)建下面的script， 改下版本號即可

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#!/bin/bash

#python版號需要修改兩個地方

#1. new_version

#sudo -i #得到超級權(quán)限

new_version="3.4"

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

#第1步移動新版python到mac默認(rèn)目錄下

echo "move.."

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

#第2步改變用戶目錄的用戶組

echo "chown.."

chown -R root:wheel ${PYPATH}

#第3步 刪除原來2.7的鏈接

echo "del.."

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

#第4步重新鏈接到最新版本的python

echo "ln.."

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

#第5步刪除舊的命令符號鏈接

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號鏈接

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步修復(fù)其他鏈接

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.環(huán)境變量要修改為最新的版本號

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

exit #退出超級權(quán)限

查看當(dāng)前python版本

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