python3.7安裝， 解決pip is configured with locations that require TLS/SSL問題
1.安裝相關依賴
yum install gcc libffi-devel zlib* openssl-devel
# libffi-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make
2.下載並解壓
wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tar.xz
# 下載
wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tar.xz
# 解壓並編譯：
tar -xvJf Python-3.7.1.tar.xz
cd Python-3.7.1
3.編譯安裝
./configure prefix=/usr/local/python3
make && make install
# 編譯完成后，創建軟鏈接文件到執行文件路徑：
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
# 我們可以清除之前編譯的可執行文件及配置文件 && 清除所有生成的文件：
make clean && make distclean
bug: 使用pip 命令失敗
2.1 錯誤信息
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting virtualenv
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
Could not fetch URL https://pypi.org/simple/virtualenv/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/virtualenv/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
Could not find a version that satisfies the requirement virtualenv (from versions: )
No matching distribution found for virtualenv
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
2.2 原因
系統版本centos6.5，其中openssl的版本為OpenSSL 1.0.1e-fips 11 Feb 2013,而python3.7需要的openssl的版本為1.0.2或者1.1.x,需要對openssl進行升級，並重新編譯python3.7.0。yum 安裝的openssl 版本都比較低。
2.3 升級openssl
# 1.下賊openssl
wget https://www.openssl.org/source/openssl-1.1.1a.tar.gz
tar -zxvf openssl-1.1.1a.tar.gz
cd openssl-1.1.1a
# 2.編譯安裝
./config --prefix=/usr/local/openssl no-zlib #不需要zlib
make
make install
# 3.備份原配置
mv /usr/bin/openssl /usr/bin/openssl.bak
mv /usr/include/openssl/ /usr/include/openssl.bak
# 4.新版配置
ln -s /usr/local/openssl/include/openssl /usr/include/openssl
ln -s /usr/local/openssl/lib/libssl.so.1.1 /usr/local/lib64/libssl.so
ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl
# 5.修改系統配置
## 寫入openssl庫文件的搜索路徑
echo "/usr/local/openssl/lib" >> /etc/ld.so.conf
## 使修改后的/etc/ld.so.conf生效
ldconfig -v
# 6.查看openssl版本
openssl version
openssl version 提示：
/usr/local/openssl/bin/openssl: error while loading shared libraries: libssl.so.1.1: cannot open shared object file: No such file or directory
假如你的libssl.so.1.1 文件在/usr/local/openssl/lib/下面，可以這樣做
ln -s /usr/local/openssl/lib/libssl.so.1.1 /usr/lib64/libssl.so.1.1
ln -s /usr/local/openssl/lib/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1
3.3 重新安裝python
./configure --prefix=/usr/local/python3 --with-openssl=/usr/local/openssl
make
make install
原文：https://blog.csdn.net/lkgCSDN/article/details/84403329