Python pip 无法确认 SSL 证书：SSL 模块不可用
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pip cannot confirm SSL certificate: SSL module is not available
提问by MortenMoulder
I am trying to install RPi.GPIO for Python 3.6 on my Raspberry Pi Zero W, but somehow it won't connect to the python.org website. I have pip installed for 2.7, 3.0, and 3.6 installed, so when I go and do something like:
我正在尝试在我的 Raspberry Pi Zero W 上为 Python 3.6 安装 RPi.GPIO，但不知何故它无法连接到 python.org 网站。我已经为 2.7、3.0 和 3.6 安装了 pip，所以当我去执行以下操作时：
sudo pip3.6 install RPi.GPIO
I get this error:
我收到此错误：
pi@raspberrypi:~ $ sudo pip3.6 install RPi.GPIO
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting RPi.GPIO
Could not fetch URL https://pypi.python.org/simple/rpi-gpio/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
Could not find a version that satisfies the requirement RPi.GPIO (from versions: )
No matching distribution found for RPi.GPIO
pi@raspberrypi:~ $ sudo pip3.6 install RPi.GPIO
pip 配置了需要 TLS/SSL 的位置，但是 Python 中的 ssl 模块不可用。
收集 RPi.GPIO
无法获取 URL https://pypi.python.org/simple/rpi-gpio/：确认 ssl 证书时出现问题：无法连接到 HTTPS URL，因为 SSL 模块不可用。- 跳过
找不到满足 RPi.GPIO 要求的版本（来自版本：）
没有找到 RPi.GPIO 的匹配分布
I did try sudo apt-get install openssland so on, but it still doesn't work. I can access the website perfectly on my desktop and phone, but my Raspberry Pi won't at all. Any idea what I can do?
我确实尝试过sudo apt-get install openssl等等，但它仍然不起作用。我可以在台式机和手机上完美访问该网站，但我的 Raspberry Pi 根本无法访问。知道我能做什么吗？
回答by Colwin
Beforeinstalling python 3.6 you need to install the libraries needed.
在安装 python 3.6之前，您需要安装所需的库。
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
Do you have these installed on the PI?
你在 PI 上安装了这些吗？
More details here
更多细节在这里
回答by michaelfeng
I encounter the same problem，finally I solved it by following
我遇到了同样的问题，最后我通过以下方式解决了
Check whether the openssl-devel has been installed. My OS is centos6 and the installing command is as following
yum install openssl-devel -y
Edit python source configure file
vi /{yourpythonsource}/Modules/Setup
检查 openssl-devel 是否已经安装。我的操作系统是centos6，安装命令如下
yum 安装 openssl-devel -y
编辑python源配置文件
vi /{yourpythonsource}/Modules/Setup
. Uncomment some of content as following
. 取消注释部分内容如下
# 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
recompile python.
重新编译python。
cd /{yourpythonsource}
make && make install
Now pip3 should be ok.
现在 pip3 应该没问题了。
