1. 安裝依賴環境
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# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
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2.下載Python3
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# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
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3.安裝python3
我個人習慣安裝在/usr/local/python3（具體安裝位置看個人喜好）
創建目錄：
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# mkdir -p /usr/local/python3
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解壓下載好的Python-3.x.x.tgz包(具體包名因你下載的Python具體版本不不同⽽而不不同，如：我下載的是Python3.6.1.那我這里就是Python-3.6.1.tgz)
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# tar -zxvf Python-3.6.1.tgz
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4.進入解壓後的目錄，編譯安裝。（編譯安裝前需要安裝編譯器yum install gcc）
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# cd Python-3.6.1
# ./configure --prefix=/usr/local/python3 #/usr/local/python3爲安裝目錄
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make
make install
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make install 或者 make && make install
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5.建立python3的軟鏈
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# ln -s /usr/local/python3/bin/python3 /usr/bin/python3
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6.並將/usr/local/python3/bin加入PATH
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# vim ~/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin:/usr/local/python3/bin
export PATH
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按ESC，輸入:wq回車退出。
修改完記得執行行下面的命令，讓上一步的修改生效：
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# source ~/.bash_profile
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檢查Python3及pip3是否正常可用：
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# python3 -V
Python 3.6.1
# pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
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7.不行的話嘗試創建一下pip3的軟鏈接
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# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
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https://www.cnblogs.com/fu-yong/p/9025489.html
