升級MAC OX上的Python到3.4

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

#!/bin/bash
#python版號需要修改兩個地方
#1. new_version

#sudo -i #得到超級權限
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 #退出超級權限

查看當前python版本

 

bixiaopeng@bixiaopengtekiMacBook-Pro ~$ python --version
Python 3.4.0