1.下载源码

https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgz

2.解压到得到:/software/tool/Python-3.5.2/

3.环境准备，安装zlib-devel和openssl-devel等

yum -y install gcc-c++ zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

4.创建安装目录

mkdir -p /usr/local/python3.5.2

5.指定配置到安装的目录

/software/tool/Python-3.5.2/configure --prefix=/usr/local/python3.5.2

6.遇到异常(编译时，文件没有拷贝到安装目录):

#gcc: error: Parser/tokenizer_pgen.o: No such file or directory

cp  /software/tool/Python-3.5.2/Parser/tokenizer_pgen.o /usr/local/python3.5.2/Parser/tokenizer_pgen.o

#gcc: error:Parser/printgrammar.o: No such file or directory

cp  /software/tool/Python-3.5.2/Parser/printgrammar.o /usr/local/python3.5.2/Parser/printgrammar.o

#gcc: error: Parser/parsetok_pgen.o No such file or directory

cp  /software/tool/Python-3.5.2/Parser/parsetok_pgen.o /usr/local/python3.5.2/Parser/parsetok_pgen.o

#gcc: error: Parser/pgenmain.o: No such file or directory

cp  /software/tool/Python-3.5.2/Parser/pgenmain.o /usr/local/python3.5.2/Parser/pgenmain.o

#make: *** [Parser/pgen] Error 1

cp  /software/tool/Python-3.5.2/Parser/pgen /usr/local/python3.5.2/Parser/pgen

#gcc: error: Programs/_testembed.o: No such file or directory

cp /software/tool/Python-3.5.2/Programs/_testembed.o /usr/local/python3.5.2/Programs/_testembed.o

#make: *** [Programs/_testembed] Error 1

cp /software/tool/Python-3.5.2/Programs/_testembed /usr/local/python3.5.2/Programs/_testembed

#(安装了此模块，就不会存在ImportError: No module named 'math'异常)gcc: error: Modules/_math.o: No such file or directory

cp  /software/tool/Python-3.5.2/Modules/_math.o /usr/local/python3.5.2/Modules/_math.o

7.编译 make

8.执行安装 make install

9.建立软连接(临时环境变量,或者直接9.1步骤) ln -s /usr/local/python3.5.2/bin/python3 /usr/bin/python3

9.1.持久环境变量

vim /etc/profile

#Python

export PYTHON_HOME=/usr/local/python3.5.2

export PATH=$PATH:$PYTHON_HOME/bin source /etc/profile

10.执行python3