前期安裝包

1.sudo apt-get update

關于sudo apt-get update 出現fetch ?ppa錯誤，https://blog.csdn.net/u014775723/article/details/85224026

2.sudo apt-get upgrade

關于sudo apt-get upgrade相關錯誤：https://blog.csdn.net/u014775723/article/details/85224071

3.sudo apt-get dist-upgrade

4.sudo apt-get install build-essential python-dev python-setuptools python-pip python-smbus

5.sudo apt-get install build-essential libncursesw5-dev libgdbm-dev libc6-dev

6.sudo apt-get install zlib1g-dev libsqlite3-dev tk-dev
7.sudo apt-get install libssl-dev openssl

8.sudo apt-get install libffi-dev

安裝3.7

1.?yum -y install zlib*

2.?yum install openssl-devel?libffi-devel?bzip2-devel -y?

3. wget?https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

4. tar -zxvf Python-3.7.4.tgz

5.?cd Python-3.7.4

6.?./configure?--with-ssl

7.?make

8. make test

8.?sudo make install

9.?測試，輸入python3.7

設置默認，可切換

1. rm /usr/bin/python

2.?ln -s /usr/bin/python3.4 /usr/bin/python

3.?mv /usr/bin/python /usr/bin/python.bak

4.?ln -s /usr/local/bin/python3 /usr/bin/python

5.?mv /usr/bin/pip /usr/bin/pip.bak

6.?ln -s /usr/local/bin/pip3 /usr/bin/pip

輸入python -V驗證

設置切換

?

sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100

sudo update-alternatives --install /usr/bin/python python /usr/local/bin/python3 200

切換命令：sudo update-alternatives --config python

總結

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