Centos中将低版本python2.7.5升级到3.6.4

python2.7.5升级到3.6.4

yum install -y gcc* openssl openssl-devel ncurses-devel.x86_64  bzip2-devel sqlite-devel  zlib python-devel mysql-devel openldap-devel

wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz

tar -xvf Python-3.6.4.tar.xz

cd Python-3.6.4

mkdir -p /usr/local/python3

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

make && make install

mv /usr/bin/python /usr/bin/python2.7.5

ln -s /usr/local/python3/bin/python3 /usr/bin/python

ln -s /usr/local/python3/bin/pip3.6 /usr/bin/pip

#修改 yum以及urlgrabber-ext-down中的python
将#!/usr/bin/python改为 #!/usr/bin/python2.7.5

vi /usr/bin/yum

vi /usr/libexec/urlgrabber-ext-down

PS:python3.6.4是默认安装pip的,所以不需要另行安装setuptools和pip.

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