after pip install: ModuleNotFoundError: No module named 'py_tools_ds.convenience'

conda create --name test python=3
source activate test
conda install -y -c conda-forge gdal
pip install arosics

gives me:

(test) hollstei@mefe95:~/dat/tmp$ python
Python 3.6.2 |Continuum Analytics, Inc.| (default, Jul 20 2017, 13:51:32) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import geoarray
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/misc/fluo6/andre/programme/anaconda/4.3.2/envs/test/lib/python3.6/site-packages/geoarray/__init__.py", line 9, in <module>
    from .baseclasses import GeoArray
  File "/misc/fluo6/andre/programme/anaconda/4.3.2/envs/test/lib/python3.6/site-packages/geoarray/baseclasses.py", line 27, in <module>
    from py_tools_ds.convenience.object_oriented import alias_property
ModuleNotFoundError: No module named 'py_tools_ds.convenience'
>>> 

then, pip freeze:

(test) hollstei@mefe95:~/dat/tmp$ pip freeze
affine==2.1.0
arosics==0.4.15
branca==0.2.0
certifi==2017.7.27.1
chardet==3.0.4
click==6.7
click-plugins==1.0.3
cligj==0.4.0
cycler==0.10.0
decorator==4.1.2
descartes==1.1.0
dill==0.2.7.1
Fiona==1.7.8
folium==0.3.0
GDAL==2.2.1
geoarray==0.5.6
geojson==1.3.5
geopandas==0.2.1
idna==2.5
ipython-genutils==0.2.0
Jinja2==2.9.6
jsonschema==2.6.0
jupyter-core==4.3.0
MarkupSafe==1.0
matplotlib==2.0.2
mpld3==0.3
munch==2.2.0
nbformat==4.3.0
networkx==1.11
numpy==1.13.1
olefile==0.44
pandas==0.20.3
Pillow==4.2.1
plotly==2.0.12
py-tools-ds==0.4.1
PyKrige==1.3.0
pyparsing==2.2.0
pyproj==1.9.5.1
python-dateutil==2.6.1
pytz==2017.2
PyWavelets==0.5.2
rasterio==0.36.0
requests==2.18.2
scikit-image==0.13.0
scipy==0.19.1
Shapely==1.5.17
six==1.10.0
snuggs==1.4.1
spectral==0.19
traitlets==4.3.2
urllib3==1.22