Install local package in anaconda environment

ISSUE: I would like to install local package in a specific conda environment. To do that, I read the current documentation (python-packaging).

package structure:

$ pwd
~/…/test
.
|- requirements.txt
|- my_package
|   |-- __init__.py
|   |-- base.py
|- setup.py

setup.py

# -*- coding: utf-8 -*-

import os
from setuptools import setup

with open('requirements.txt') as f:
    requirements = f.read().splitlines()

setup(
    name='my_package',
    version='2.0.0',
    author='B.Gees',
    author_email='B.Gees@gmail.com',
    license='MIT',
    packages=['my_package'],
    description='my package description',
    long_description='my package long description',
    keywords='chemistry machine learning cheminformatics',
    classifiers=[
        'Environment :: Console',
        'Intended Audience :: Developers',
        'Intended Audience :: Healthcare Industry',
        'Intended Audience :: Science/Research',
        'License :: OSI Approved :: MIT License',
        'Operating System :: OS Independent',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.5',
        'Programming Language :: Python :: 3.5.5',
        'Topic :: Scientific/Engineering',
        'Topic :: Scientific/Engineering :: Bio-Informatics',
        'Topic :: Scientific/Engineering :: Chemistry',
        'Topic :: Scientific/Engineering :: Pharmacokinetic',
        'Topic :: Software Development :: Libraries :: Python Modules',
    ],
    install_requires=requirements,
    zip_safe=False
)

requirements.txt

pandas==0.19.2
dill==0.2.7.1
cython==0.23.4

__init__.py

# -*- coding: UTF-8 -*-

"""
my_package
~~~~~~~~~~

my package full description

:copyright: (c) 2018 by B.Gees.
:license: MIT, see LICENSE file for more details.
"""

from __future__ import print_function
from __future__ import unicode_literals
from __future__ import division
import logging

__title__ = 'my_package'
__version__ = '2.0.0'
__author__ = 'B.Gees'
__email__ = 'B.Gees@gmail.com'
__license__ = 'MIT'
__copyright__ = 'Copyright 2018 B.Gees'

log = logging.getLogger(__name__)
log.addHandler(logging.NullHandler())

base.py

# -*- coding: UTF-8 -*-

def titi(x):
    return x**2

I install my package in a specific conda environment with the folowing code lines:

conda activate my_env
pip install . # In my package repository

Nevertheless, when I try to import my_package in jupyter notebook, I obtain the following error:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-9-daa52839320b> in <module>()
----> 1 import my_package

ImportError: No module named 'my_package'

This installation works fine when I used python pip outer conda environment.

QUESTION: I don't know how to install my package correctly in a specific conda environment. I need your lights to enlighten me.

CONFIGURATION: MacOSX with conda3 and python3.5 ; Need to be compatible with Linux 7