解决Python找不到ssl模块问题 No module named _ssl的方法

python/' target='_blank'>python安装完毕后，提示找不到ssl模块：

[www@Pythontab.com ~]$ pythonPython 2.7.15 (default, Oct 23 2018, 18:08:43) [GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux2Type "help", "copyright", "credits" or "license" for more information.>>> import sslTraceback (most recent call last):File "<stdin>", line 1, in <module>File "/usr/local/python27/lib/python2.7/ssl.py", line 60, in <module>import _ssl # if we can't import it, let the error propagateImportError: No module named _ssl>>>

解决方法：

1. 查看openssl安装包，发现缺少openssl-devel包

[www@pythontab.com ~]$ rpm -aq|grep opensslopenssl-0.9.8e-20.el5openssl-0.9.8e-20.el5[www@pythontab.com ~]$

2. yum安装openssl-devel

[www@pythontab.com ~]$ yum install openssl-devel -y#查看安装结果[www@pythontab.com ~]$ rpm -aq|grep opensslopenssl-devel-1.0.1e-57.el6.x86_64openssl-1.0.1e-57.el6.x86_64

3. 重新编译python

修改Setup文件

vi /src/Python-2.7.15/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=/usr/local/ssl_ssl _ssl.c \-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \-L$(SSL)/lib -lssl -lcrypto

4. 重新编译

进入源码目录，重新编译安装

[www@pythontab.com ~]$ cd /src/Python-2.7.15/[www@pythontab.com ~]$ make[www@pythontab.com ~]$ make install

5. 测试，已可正常使用。

[www@pythontab.com ~]$ pythonPython 2.7.15 (default, Oct 23 2018, 19:08:43)[GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux2Type "help", "copyright", "credits" or "license" for more information.>>> import ssl>>>

注：如需保留旧版本的就不需要执行 6 .7两部

6 重命名旧版本的python依赖

ll /usr/bin | grep pythonmv /usr/bin/python /usr/bin/python2.7

7 删除旧的软链接，创建新的软链接到最新的python

rm -rf /usr/bin/pythonln -s /usr/local/bin/python3.6 /usr/bin/pythonpython -V

使用yum命令报错File "/usr/bin/yum", line 30 except KeyboardInterrupt, e:

问题出现原因：

yum包管理是使用python2.x写的，将python2.x升级到python3.1.3以后，由于python版本语法兼容性导致问题出现

解决办法：

修改yum配置文件，将python版本指向以前的旧版本

# vi /usr/bin/yum#!/usr/bin/python2.7修改urlgrabber-ext-down文件，更改python版本# vi /usr/libexec/urlgrabber-ext-down#!/usr/bin/python2.7Could not fetch URL https://pypi.python.org/simple/six/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping

如需安装pip

下载相关文件

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

执行

/usr/local/python/bin/python3 get-pip.py

添加环境变量

vim ~/.bash_profile

添加下面这条参数

export PATH=/usr/local/python/bin:$PATH

保存

source ~/.bash_profile

测试

执行

[root@huo ~]# python3Python 3.6.5 (default, Apr 1 2018, 20:41:34)[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linuxType "help", "copyright", "credits" or "license" for more information.>>>

执行脚本如下:

vim install_python.sh

#!/bin/bashecho "正在安装相关组件"yum install -y openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel gcc-c++ gcc openssl-devel echo "下载安装包"wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz echo "正在解压安装包"tar -xf Python-3.6.5.tgz -C /root/ && cd /root/Python-3.6.5/ echo "添加ssl支持"cat >> /root/Python-3.6.5/Modules/Setup.dist <<"EOF"_socket socketmodule.c SSL=/usr/local/ssl_ssl _ssl.c \-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \-L$(SSL)/lib -lssl -lcryptoEOF echo "正在编译安装Python"./configure --prefix=/usr/local/python && make && make installcd /root echo "删除安装包"rm -rf /root/Python-3.6.5.tgz && rm -rf /root/Python-3.6.5 echo "正在添加环境变量"echo "export PATH=/usr/local/python/bin:$PATH">> ~/.bash_profilesource ~/.bash_profile echo "安装完成,请执行python3进行测试"

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