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pip install has SSL issue in virtualenv with interperter of python27

TL;DR
Trying to use pip install within a python27 venv and got SSL connection error.
I am very new to python development. With the advent of python 3 and all the compatibility issues it introduced, I never felt so lost with so many python 2 codes and documentations active along with python 3 documentations.
So I am working with a python web app (flask based) which should be running on python 2.7.
I am running windows 10 with VS Code.
So I have done all the steps to create a venv folder under my project with the cmd virtualenv -p "C:\\Python27\python.exe" venv
When I start doing the pip install -r requirements.txt
I am getting following connection error.
c:\users\path\to\project\venv\lib\site-packages\pip_vendor\urllib3\util\ssl_.py:354:
SNIMissingWarning: An HTTPS request has been made, but the SNI (Server
Name Indication) extension to TLS is not available on this platform.
This may cause the server to present an incorrect TLS certificate,
which can cause validation failures. You can upgrade to a newer
version of Python to solve this. For more information, see
https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning
Retrying (Retry(total=4, connect=None,
read=None, redirect=None, status=None)) after connection broken by
'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL
routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)':
/simple/pip/
c:\users\kenzho~1\worksa~1\7eleve~1\venv\lib\site-packages\pip_vendor\urllib3\util\ssl_.py:150:
InsecurePlatformWarning: A true SSLContext object is not available.
This prevents urllib3 from configuring SSL appropriately and may cause
certain SSL connections to fail. You can upgrade to a newer version of
Python to solve this. For more information, see
https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
I have tried following ways to address the issue.
python -m pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org --index-url=https://pypi.org/simple/
But none of them seems to work.
Any body got any idea?
Thanks

You need to update your Python SSL packages.
Option 1
Installing the following packages will fix the errors.
pip install pyOpenSSL ndg-httpsclient pyasn1
But this will only work for the system version of Python 2.7.6.
For some reason trying the same fix with a python in a virtual env fails hard. You end up not being able to complete the update because of the SSL error you are trying to fix.
Option 2
Upgrade your version of python. The fixes you need have been bundled into Python 2.7.9
Details of the error and fix are in the release notes.

Can't install tornado

I am setting up tensorflow and i got this output:
ERROR: matplotlib 1.3.1 requires nose, which is not installed.
so i am doing
sudo easy_install tornado
and i got as output:
earching for tornado
Reading https://pypi.python.org/simple/tornado/
Download error on https://pypi.python.org/simple/tornado/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
Couldn't find index page for 'tornado' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
Download error on https://pypi.python.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
No local packages or download links found for tornado
error: Could not find suitable distribution for Requirement.parse('tornado')
what should i do?
thanks
francesco
ERROR: matplotlib 1.3.1 requires nose, which is not installed.

It seems that you are running the command behind a proxy or a firewall. If this is the case, then you need to set the corresponding environment variables:
set http_proxy="username:password#host:port"
set https_proxy="username:password#host:port"
Otherwise, you can install tornado using pip by running (if you are not behind a proxy, then ignore --proxy):
pip --proxy http://user:password#proxy-host:port install tornado
EDIT: I would suggest to run
sudo -H pip install --ignore-installed matplotlib
in order to install the required packages and ignore the current version.

SSL: TLSV1_ALERT_PROTOCOL_VERSION

I am very new to Python world, so please be patient with me.
I have a Mac running High Sierra (10.13.4). I installed Python on it and I now have two Python 2.7.10 and 3.6.5
As per my understanding 2.7.10 is default for Mac and I should not tinker with it.
Now, I am trying to connect Python3 to MySQL. I am running following command:
pip install MySQL-python
but facing an error
Collecting MySQL-python3
Could not fetch URL https://pypi.python.org/simple/mysql-python3/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) - skipping
Could not find a version that satisfies the requirement MySQL-python3 (from versions: )
No matching distribution found for MySQL-python3
I tried the solution provided here
ssl.SSLError: tlsv1 alert protocol version
openssl 1.0.2o_1
pip --version: pip 9.0.1 from /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages (python 3.5)
I tried to install virtualenv by running following commend:
sudo pip install virtualenv
but still getting an error:
Could not fetch URL https://pypi.python.org/simple/virtualenv/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) - skipping
Could not find a version that satisfies the requirement virtualenv (from versions: )
No matching distribution found for virtualenv
Can someone please help me out here? I am trying to find answers my own but have failed so far, so need help.

I can not install the django-constance, with error of Could not find a version that satisfies the requirement django-constance (from versions: )

From the constance docs:
install the constance:
pip install django-constance
But I can not install it, with the error log:
$ pip3 install django-constance
Collecting django-constance
Could not fetch URL https://pypi.python.org/simple/django-constance/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) - skipping
Could not find a version that satisfies the requirement django-constance (from versions: )
No matching distribution found for django-constance

Check the python version you are running on e.g. 2.7 or 3.5. Then get an appropriate package version for the respective version you have and install it with pip install package-name==%.%.%where %.%.%Is the package version for your python version. Note that some packages are only released for only python2 while others are for python 3

The following output of your console:
There was a problem confirming the ssl certificate
indicates that there was a network problem while you were trying to install this dependency. It seems like it could be related to this issue:
pip install fails with "connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)"
solution propesed there was:
You may want to add the trusted hosts and proxy to your config file.
pip.ini (Windows) or pip.conf (unix)
[global]
trusted-host = pypi.python.org
pypi.org
files.pythonhosted.org
I hope that this helps.

pip install issue with ssl certificate:[SSL: TLSV1_ALERT_ACCESS_DENIED]

Pip version:9.0.1
Python version:3.6.3
Operating system:Win7
Description:
I'm trying to install python libraries in my laptop but run into an SSL certificate error when running pip -install for any library. I have tried several suggestions from other posts but all of them didn't work.
Can someone kindly help me to resolve this SSL issue? Thanks in advance.
What I've run:
C:\Users\zhouweiq>pip install requests
Collecting requests
Could not fetch URL https://pypi.python.org/simple/requests/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_ACCESS_DENIED] tlsv1 alert access denied (_ssl.c:777) - skipping
Could not find a version that satisfies the requirement requests (from versions: )
No matching distribution found for requests

I also got the same issue but after configuring proxy it resolved.
Proxy in Windows-> internet options-> connections -> LAN settings.