python36源码编译后无法通过pip安装软件
Python-3.6.2
最近在Ubuntu17.04上安装Python3.6之后,使用pip命令出现了问题,提示说找不到ssl模块,出现错误如下:
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available. Could not fetch URL https:*******: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
安装Python3.6的操作如下
wget获取安装包: wget http://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz 解压安装包: tar -xvzf Python-3.6.2.tgz 检查安装平台属性,系统是否有编译时所需要额库,以及库的版本是否满足编译需要 ./configure --prefix=/usr/local/python36 编译源码 make 成功编译之后,安装 sudo make install
在安装完之后,我们希望用pip3命令来安装pymysql。首先,用如下命令安装pip3:
cd /usr/local/python36/bin/ && ./pip3.6 install pymysql
但是此时就出错了,显示本文开始提到的错误,大致意思就是安装过程需要SSL,但是那个SSL找不到。
在./configure过程中,如果没有加上–with-ssl参数时,默认安装的软件涉及到ssl的功能不可用,刚好pip3过程需要ssl模块,而由于没有指定,所以该功能不可用
解决办法是重新对python3.6进行编译安装,用一下过程来实现编译安装:
apt install openssl libssl-dev cdPython-3.6.2 ./configure --prefix=/usr/local/python36 --with-ssl make sudo make install
python 3.6.4 配置ssl
yum install openssl-devel -y vi /usr/local/Python-3.6.4/Modules/Setup #修改结果如下: # Socket module helper for socket(2) _socket socketmodule.c timemodule.c # Socket module helper for SSL support; you must comment out the other # socket line above, and possibly edit the SSL variable: SSL=/etc/ssl _ssl _ssl.c \ -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \ -L$(SSL)/lib -lssl -lcrypto

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