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  • centos7 python2和python3共存

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

    # 测试
    [root@operation bin]# pip3 -V
    pip 18.1 from /usr/local/python3/lib/python3.6/site-packages/pip (python 3.6)
     
    # 使用
    [root@operation bin]# pip3 install 包名
     
    或者
    [root@operation bin]# python3 -m pip install 包名

    whereis python
    /usr/bin/python
    /usr/bin/python2.7
    /usr/bin/python2.7-config
    /usr/lib/python2.7
    /usr/lib64/python2.7
    /etc/python
    /usr/include/python2.7
    /usr/local/python3/bin/python3.8
    /usr/local/python3/bin/python3.8-config
    /root/miniconda3/bin/python
    /root/miniconda3/bin/python2.7
    /root/miniconda3/bin/python2.7-config
    /usr/share/man/man1/python.1.gz


    echo $PATH
    /usr/local/python3//bin
    :/home/software/cufflinks-2.1.1.Linux_x86_64/
    :/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/bin
    :/root/perl5/bin
    :/root/miniconda3/bin
    :/usr/local/python3//bin
    :/home/software/cufflinks-2.1.1.Linux_x86_64/
    :/usr/local/sbin
    :/usr/local/bin
    :/usr/sbin
    :/usr/bin
    :/root/bin
    :/home/software/cuda-10.0/bin


    which python
    /root/miniconda3/bin/python


    vi /usr/bin/yum

    #!/usr/bin/python
    修改为
    #!/usr/bin/python2.7

    同理
    vi /usr/libexec/urlgrabber-ext-down
     文件里面的
    #!/usr/bin/python
    也要修改为
    #!/usr/bin/python2.7

    which pip
    /root/miniconda3/bin/pip

    链接替换:
    ln -s /usr/local/python3/bin/python3.8 /usr/bin/python -f
    ln -s /usr/bin/pip3 /usr/bin/pip -f

    # vim /usr/bin/firewall-cmd
    首行改为
    #!/usr/bin/python2.7 -Es

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  • 原文地址:https://www.cnblogs.com/emanlee/p/13578190.html
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