Linux下安裝Python

環境：centos7下

官網Linux下載安裝python3的所需版本

[root@localhost ~]# wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz

[root@localhost ~]# tar -xvf Python-3.6.0.tgz -C /usr/local

創建安裝文件的路徑

[root@localhost ~]# mkdir /usr/local/python3

安裝編譯

[root@localhost ~]# cd /usr/local
[root@localhost Python-3.6.0]# cd Python-3.6.0
[root@localhost Python-3.6.0]# ./configure --prefix=/usr/local/python3
[root@localhost Python-3.6.0]# make
[root@localhost Python-3.6.0]# make install

修改舊版本

[root@localhost Python-3.6.0]# mv /usr/bin/python /usr/bin/python_bak

創建新的軟連接

[root@localhost Python-3.6.0]# ln -s /usr/local/python3/bin/python3 /usr/bin/python

檢查python的版本是否安裝成功

[root@localhost Python-3.6.0]# python -V
 python-3.6.0

Linux報錯：bash: pip: command not found

安裝pip

[root@localhost data]#  wget https://bootstrap.pypa.io/get-pip.py
[root@localhost data]#  python get-pip.py
[root@localhost data]#  pip -V　　#查看pip版本

接下來就可以隨便pip安裝東西了

如果還不行，先查下安裝路徑：

[root@localhost data]# find / -name pip

然後做個軟連接

[root@localhost data]# ln -sv /usr/local/python/bin/pip /usr/bin/pip