CentOS 7 Installing the Python 3.6,PIP3 error problem __python

After installing Python3.6.3 on CentOS 7, the following error was used in the PIP command times

Traceback (most recent call last): File "/usr/python3.6.3/lib/python3.6/site-packages/pip/basecommand.py", line 215, in Main status = Self.run (options, args) File "/usr/python3.6.3/lib/python3.6/site-packages/pip/commands/search.py", L INE, in Run pypi_hits = self.search (query, Options) File "/usr/python3.6.3/lib/python3.6/site-packages/pip/comman ds/search.py ", line, in search hits = Pypi.search ({' name ': Query, ' Summary ': query}, ' or ') File"/usr/python3.6.3 /lib/python3.6/xmlrpc/client.py ", line 1112, in __call__ return Self.__send (Self.__name, args) File"/usr/python3.6. 3/lib/python3.6/xmlrpc/client.py ", line 1452, in __request verbose=self.__verbose File"/usr/python3.6.3/lib/python3 .6/site-packages/pip/download.py ", line 775, in Request Headers=headers, stream=true) File"/usr/python3.6.3/lib/pyt hon3.6/site-packages/pip/_vendor/requests/sessions.py ", line 522, in Post return Self.request (' post ', url, Data=data, Json=json, **kwargs) FiLe "/usr/python3.6.3/lib/python3.6/site-packages/pip/download.py", line 386, in Request return super (pipsession, self) . Request (method, URL, *args, **kwargs) File "/usr/python3.6.3/lib/python3.6/site-packages/pip/_vendor/requests/ sessions.py ", line 475, in Request RESP = self.send (Prep, **send_kwargs) File"/usr/python3.6.3/lib/python3.6/site-p ackages/pip/_vendor/requests/sessions.py ", line 596, in Send R = adapter.send (Request, **kwargs) File"/usr/python3. 6.3/lib/python3.6/site-packages/pip/_vendor/cachecontrol/adapter.py ", line, in Send resp = Super (cachecontroladapt Er, self). Send (Request, **kw) File "/usr/python3.6.3/lib/python3.6/site-packages/pip/_vendor/requests/adapters.py" , line 497, into send raise Sslerror (E, request=request) Pip._vendor.requests.exceptions.sslerror:can ' t connect to HTTP S URL because the SSL module is not available.

Because the reason for not properly configured SSL, after several experiments, summed up the correct installation steps.

Installation steps:

1. Download Python 3.6.3

https://www.python.org/downloads/source/

2. Decompression

. xz files need to be decompressed using the XZ tool, first install XZ

sudo yum install xz

xz d python-3.6.3.tar.xz


tar xvf python-3.6.3.tar

3. Download/install OpenSSL and openssl-devel. No wget can be installed via yum install wget

wget https://www.openssl.org/source/openssl-1.1.0g.tar.gz

At the CentOS 7 minimum installation, the OpenSSL is installed by default, but I did not find the installed Lib path, so I uninstalled it and installed myself because the path needed to install Python3.6. To uninstall the OpenSSL command:

sudo yum erase OpenSSL

Install OpenSSL:

Tar zxvf openssl-1.1.0g.tar.gz

cd openssl-1.1.0g

./config--prefix=/usr/local/openssl

Make

Make install

Where the--prefix path is the directory that will be installed, remember to use the following.

Download Openssl-devel and install

sudo yum install Openssl-devel

4. Add Lib Read path

sudo vi/etc/ld.so.conf

Add a row at the end

/usr/local/openssl/lib

This path is the path where the OpenSSL was just installed. Then execute the following command to make it effective

sudo ldconfig

5. Modify the Modules/setup.dist file in the Python installation package to open the part of the SSL annotation, and modify it as follows:

# Socket Module helper for SSL support; You must comment out
of the other # socket line above, and possibly edit the SSL variable:
ssl=/usr/local/openssl
  
   _ssl _ssl.c \
        -duse_ssl-i$ (SSL)/include-i$ (SSL)/include/openssl \
        -l$ (SSL)/lib-lssl-lcrypto
  

Where the path behind ssl= is the path you actually install OpenSSL

6. Configure Installation

./configure--prefix=/usr/python3.6.3

Make

Make install

If you cannot find a libssl.so.1.1 error during the installation process, check the configuration for steps 3rd and 4th.