ubuntu安装python3.5并改默认python为3.5
2017-06-09 16:23
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1、使用下面命令
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sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python3.5
2、然后输入python时启动的是python2.7
输入python3时启动的是python3.4
输入python3.5时启动的才是python3.5
3、使用以下命令即可更改python默认为3.5
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sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.5 200
4、取消原本的 Python 3.4 ,并将 Python3 链接到最新的 3.5 上:
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sudo mv /usr/bin/python3 /usr/bin/python3-old
sudo ln -s /usr/bin/python3.5 /usr/bin/python3
5、安装新版pip:
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wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
sudo pip3 install setuptools --upgrade
sudo pip3 install ipython[all]
6、切换回来链接文件:
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sudo rm /usr/bin/python3
sudo mv /usr/bin/python3-old /usr/bin/python3
[plain] view
plain copy
sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python3.5
2、然后输入python时启动的是python2.7
输入python3时启动的是python3.4
输入python3.5时启动的才是python3.5
3、使用以下命令即可更改python默认为3.5
[plain] view
plain copy
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.5 200
4、取消原本的 Python 3.4 ,并将 Python3 链接到最新的 3.5 上:
[plain] view
plain copy
sudo mv /usr/bin/python3 /usr/bin/python3-old
sudo ln -s /usr/bin/python3.5 /usr/bin/python3
5、安装新版pip:
[plain] view
plain copy
wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
sudo pip3 install setuptools --upgrade
sudo pip3 install ipython[all]
6、切换回来链接文件:
[plain] view
plain copy
sudo rm /usr/bin/python3
sudo mv /usr/bin/python3-old /usr/bin/python3
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