How to access a shared resource with pytest-xdist?

I want to access a list that contains all the account credentials to provide them to each separate thread in pytest-xdist. How do I achieve that? As far as I know, pytest-dist, for each thread started, it is a separate session of tests and they initialize each python module separately in their memory. I have a example of code snippet as follows

import sys
import pytest
import threading
import time

lock = threading.Lock()

i = 0
lis = []
lis.append(1)
lis.append(2)


class TestAAA(object):

    def test_function1(self, fixture_function_feature1):
        global i, lock
        with lock:
            print "Lock Acquired"
            time.sleep(2)
            print >> sys.stderr, 'test_: '+str(lis[i])

Command executed:

pytest -sv -n 2 --count=5 

Output:

test_: 1
test_: 1

Output expected:

test_: 1
test_: 2

I also tried using a shared resource mentioned at https://github.com/pytest-dev/pytest/issues/1402#issuecomment-186299177

 import pytest

    def pytest_configure(config):        
        if is_master(config):
            config.shared_directory = tempdir.mktemp()

    def pytest_unconfigure(config):        
        if is_master(config):
            shutil.rmtree(config.shared_directory)


    def pytest_configure_node(self, node):
        """xdist hook"""
        node.slaveinput['shared_dir'] = node.config.shared_directory


    @pytest.fixture
    def shared_directory(request):
        if is_master(request.config):
            return request.config.shared_directory
        else:
            return request.config.slaveinput['shared_dir']


    def is_master(config):
        """True if the code running the given pytest.config object is running in a xdist master
        node or not running xdist at all.
        """
        return not hasattr(config, 'slaveinput')

    def test_shared_dir(shared_directory):
        print >> sys.stderr, 'master logs dir: '+str(shared_directory) 

Running them with pytest-xdist and without, both gives out error

Command: pytest -sv test_parallel_share.py

Output:

―――――――――――――――――――――――――――――――――――――――――――――― ERROR at setup of test_shared_dir ―――――――――――――――――――――――――――――――――――――――――――――――

request = <SubRequest 'shared_directory' for <Function 'test_shared_dir'>>

    @pytest.fixture
    def shared_directory(request):
        if is_master(request.config):
>           return request.config.shared_directory
E           AttributeError: 'Config' object has no attribute 'shared_directory'

test_parallel_share.py:21: AttributeError
                                                                                                                 100% ██████████

Results (0.05s):
       1 error

Command: pytest -n 2 -sv test_parallel_share.py

Output:

scheduling tests via LoadScheduling


―――――――――――――――――――――――――――――――――――――――――――――― ERROR at setup of test_shared_dir ―――――――――――――――――――――――――――――――――――――――――――――――
[gw0] darwin -- Python 2.7.10 /Users/mcj/PycharmProjects/HendrixKPIs/venv/bin/python

request = <SubRequest 'shared_directory' for <Function 'test_shared_dir'>>

    @pytest.fixture
    def shared_directory(request):
        if is_master(request.config):
            return request.config.shared_directory
        else:
>           return request.config.slaveinput['shared_dir']
E           KeyError: 'shared_dir'

test_parallel_share.py:23: KeyError
                                                                                                                 100% ██████████

Results (0.55s):
       1 error