源码安装python3

1、下载安装包

　　wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz

2、解压

     tar -xvJf Python-3.7.2.tar.xz

3、创建编译安装目录

　 mkdir /usr/local/python3

4、编译和安装

    cd Python-3.7.2

    ./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl

    #第一个指定安装的路径,不指定的话,安装过程中可能软件所需要的文件复制到其他不同目录,删除软件很不方便,复制软件也不方便.

    #第二个可以提高python10%-20%代码运行速度.

    #第三个是为了安装pip需要用到ssl,后面报错会有提到.

    make && make install

5、创建软连接

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

6、测试

　   python

      pip list

7、错误

         zipimport.ZipImportError: can't decompress data; zlib not available

    1、yum -y install zlib*  yum -y install libffi-devel

    2、 解压包中   vim Python-3.7/Modules/Setup

# Andrew Kuchling's zlib module.
# This require zlib 1.1.3 (or later).
# See http://www.gzip.org/zlib/
zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz

# Interface to the Expat XML parser
# More information on Expat can be found at www.libexpat.org.
#
#pyexpat expat/xmlparse.c expat/xmlrole.c expat/xmltok.c pyexpat.c -I$(srcdir)/Modules/expat -DHAVE_EXPAT_CONFIG_H -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI

使用pip3 出现Can't connect to HTTPS URL because the SSL module is not available

# CSV file helper
#_csv _csv.c

# Socket module helper for socket(2)
_socket socketmodule.c

# Socket module helper for SSL support; you must comment out the other
# socket line above, and possibly edit the SSL variable:
#SSL=/usr/local/ssl
_ssl _ssl.c \
-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
-L$(SSL)/lib -lssl -lcrypto
# The crypt module is now disabled by default because it breaks builds
# on many systems (where -lcrypt is needed), e.g. Linux (I believe).

　　

配置 pip 源

cd ~
mkdir .pip
cd .pip
vim pip.conf

#进入后添加以下内容,保存退出.
[global]
index-url = https://mirrors.aliyun.com/pypi/simple