importing the package gives error.

[DumbMachine]

Import the package gives the following error:

TypeError: __call__() got an unexpected keyword argument 'warn_on_impl'

Full traceback:

ERROR:root:Internal Python error in the inspect module.
Below is the traceback from this internal error.

Traceback (most recent call last):
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3296, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-1-65ec2da39b2a>", line 1, in <module>
    import pixel_art
  File "C:\Users\ratin\Downloads\draw-canvas-rxjs\pixel_art\pixel_art\__init__.py", line 2, in <module>
    from .color_utils import get_dominant_color_paths as get_icon_colors
  File "C:\Users\ratin\Downloads\draw-canvas-rxjs\pixel_art\pixel_art\color_utils.py", line 5, in <module>
    from sklearn.cluster import KMeans
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\cluster\__init__.py", line 6, in <module>
    from .spectral import spectral_clustering, SpectralClustering
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\cluster\spectral.py", line 15, in <module>
    from ..metrics.pairwise import pairwise_kernels
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\metrics\__init__.py", line 7, in <module>
    from .ranking import auc
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\metrics\ranking.py", line 36, in <module>
    from ..preprocessing import label_binarize
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\preprocessing\__init__.py", line 6, in <module>
    from ._function_transformer import FunctionTransformer
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\preprocessing\_function_transformer.py", line 5, in <module>
    from ..utils.testing import assert_allclose_dense_sparse
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\sklearn\utils\testing.py", line 751, in <module>
    import pytest
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\pytest.py", line 8, in <module>
    from _pytest.config import cmdline
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 23, in <module>
    import _pytest.hookspec  # the extension point definitions
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\_pytest\hookspec.py", line 503, in <module>
    @hookspec(historic=True, warn_on_impl=PYTEST_LOGWARNING)
TypeError: __call__() got an unexpected keyword argument 'warn_on_impl'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2033, in showtraceback
    stb = value._render_traceback_()
AttributeError: 'TypeError' object has no attribute '_render_traceback_'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\IPython\core\ultratb.py", line 1095, in get_records
    return _fixed_getinnerframes(etb, number_of_lines_of_context, tb_offset)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\IPython\core\ultratb.py", line 313, in wrapped
    return f(*args, **kwargs)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\IPython\core\ultratb.py", line 347, in _fixed_getinnerframes
    records = fix_frame_records_filenames(inspect.getinnerframes(etb, context))
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\inspect.py", line 1502, in getinnerframes
    frameinfo = (tb.tb_frame,) + getframeinfo(tb, context)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\inspect.py", line 1460, in getframeinfo
    filename = getsourcefile(frame) or getfile(frame)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\inspect.py", line 696, in getsourcefile
    if getattr(getmodule(object, filename), '__loader__', None) is not None:
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\inspect.py", line 733, in getmodule
    if ismodule(module) and hasattr(module, '__file__'):
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\py\_vendored_packages\apipkg.py", line 195, in __getattribute__
    return getattr(getmod(), name)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\py\_vendored_packages\apipkg.py", line 179, in getmod
    x = importobj(modpath, None)
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\py\_vendored_packages\apipkg.py", line 69, in importobj
    module = __import__(modpath, None, None, ['__doc__'])
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\pytest.py", line 8, in <module>
    from _pytest.config import cmdline
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\_pytest\config\__init__.py", line 23, in <module>
    import _pytest.hookspec  # the extension point definitions
  File "C:\Users\ratin\AppData\Local\Continuum\anaconda3\lib\site-packages\_pytest\hookspec.py", line 503, in <module>
    @hookspec(historic=True, warn_on_impl=PYTEST_LOGWARNING)
TypeError: __call__() got an unexpected keyword argument 'warn_on_impl'
----------------------------------

[AdamSpannbauer]

I cannot reproduce the error using a fresh virtualenv.

Steps taken to reproduce (from inside dir of cloned repo):

(venv) >pip install . --quiet
(venv) >pip install opencv-contrib-python --quiet
(venv) >python
Python 3.6.6 (v3.6.6:4cf1f54eb7, Jun 27 2018, 03:37:03) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pixel_art
>>> 

Based on this issue related to your error message you might want to try upgrading pytest & its dependencies to solve the issue.

[DumbMachine]

Thanks for the prompt reply. My bad, I didn't try upgrading the dependencies.
The following helped solve the issue;

pip install --upgrade pytest

I'm closing the issue. 👍