centos7.4安裝python3.7.4和pip3

1.去官網下載Python-3.7.4.tar.xz包，然後上傳到服務器/usr/local/目錄，或者使用wget去下載到/usr/local/
2.解壓，沒有xz就yum install xz

xz -d Python-3.7.4.tar.xz
tar zxvf Python-3.7.4.tar

3.安裝依賴

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 gcc libffi-devel gcc make automake autoconf libtool libffi-devel

4.如果報錯ModuleNotFoundError: No module named ‘_ctypes’

yum install libffi-devel -y

5.進入到解壓目錄

cd Python-3.7.4

6.創建安裝目錄

mkdir /usr/local/python3

7.安裝

./configure --prefix=/usr/local/python3
make && make install

8.建立軟連接，就是快捷方式

ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

9.如果安裝完，使用pip3安裝庫報

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available

10.安裝

yum install openssl-devel -y 

11.進入Python-3.7.4目錄，執行

make clean
./configure --enable-optimizations --prefix=/usr/local/python3
make && make install