在centos7.6系统下执行pip 安装软件时会出现如图提示,python 2.7将在2020年1月1日停止维护,如何升级python版本呢?本教程升级为python 3.7

1.输入yum install libffi-devel zlib zlib-devel gcc openssl openssl-devel wget -y,按回车键安装编译环境包
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2.输入wget https://www.python.org/ftp/python/3.7.6/Python-3.7.6.
tar.xz,按回车键下载Python3.7源码包

3.输入tar -xvf Python-3.7.6.tar.xz按回车键解压
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4.输入cd Python-3.7.6按回车键进入该目录
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5.输入./configure --prefix=/usr/local/python3.7按回车键配置安装目录
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6.输入make && make install按回车键开始安装
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7.输入cp /usr/bin/python /usr/bin/python_old按回车键
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8.输入rm -rf /usr/bin/python按回车键
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9.输入ln -s /usr/local/python3.7/bin/python3.7 /usr/bin/python按回车键
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10.输入python --version按回车键查看版本
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11.输入sed -i 's/python/python_old/g' /usr/bin/yum按回车键
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12.输入sed -i 's/python/python_old/g' /usr/libexec/urlgrabber-ext-down按回车键
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13.输入echo 'export PATH=$PATH:/usr/local/python3.7/bin/' >>
/etc/profile按回车键
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14.输入source /etc/profile按回车键
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15.此时执行pip3可以正常安装软件了
