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檔案

第3步: 配置

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

#sudo -i #得到超級許可權
new_version="3.4"

PYPATH=/System/Library/Frameworks/Python.framework/Versions/"$new_version"
#第1步移動新版python到mac預設目錄下
echo "move.."
mv /Library/Frameworks/Python.framework/Versions/"$new_version" /System/Library/Frameworks/Python.framework/Versions/
#第2步改變使用者目錄的使用者組
echo "chown.."
chown -R root:wheel ${PYPATH}
#第3步 刪除原來2.7的連結
echo "del.."
rm /System/Library/Frameworks/Python.framework/Versions/Current
#第4步重新連結到最新版本的python
echo "ln.."
ln -s ${PYPATH} /System/Library/Frameworks/Python.framework/Versions/Current
#第5步刪除舊的命令符號連結
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連結
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步修復其他連結
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.環境變數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 #退出超級許可權
 

[email protected] ~$ python --version
Python 3.4.0

微信公眾帳號: wirelessqa

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