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yum update

yum upgrade

yum install zlib* -y 

yum install libffi-devel -y 

yum install openssl-devel -y 

yum install install build-essential python-dev python-setuptools python-pip python-smbus -y

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wegt https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz.xz

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#1.解压文件
tar -xvJf Python-3.7.0.tgz.xz

#如文件结尾为`tgz`,使用以下解压命令
tar -zvxf Python-3.7.0.tgz

#2.配置安装python3的路径
cd Python-3.7.0

./configure --prefix=/usr/local/python3

#3.编译安装
make && make install

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ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3

ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3