Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

doctest with block_reduce has ImportError

See original GitHub issue

This has been reported upstream at scikit-image/scikit-image#3551 . Not sure how best to handle this failure in the meantime.

https://travis-ci.org/astropy/astropy/jobs/455917279

_______________________ [doctest] docs/nddata/index.rst ________________________
323 
324 The functions `~astropy.nddata.block_reduce` and
325 `~astropy.nddata.block_replicate` resize images. The example below reduces the
326 size of the image by a factor of 4. Note that the result is a `numpy.ndarray`;
327 the mask, metadata, etc are discarded:
328 
329 .. doctest-requires:: skimage
330 
331     >>> from astropy.nddata import block_reduce, block_replicate
332     >>> smaller = block_reduce(ccd, 4)
UNEXPECTED EXCEPTION: ImportError("cannot import name '_validate_lengths'",)
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/test/lib/python3.6/doctest.py", line 1330, in __run
    compileflags, 1), test.globs)
  File "<doctest index.rst[61]>", line 1, in <module>
  File "/tmp/astropy-test-rp8r1_8c/lib/python3.6/site-packages/astropy/utils/decorators.py", line 827, in block_reduce
    func = make_function_with_signature(func, name=name, **wrapped_args)
  File "/tmp/astropy-test-rp8r1_8c/lib/python3.6/site-packages/astropy/nddata/decorators.py", line 245, in wrapper
    result = func(data, *args, **kwargs)
  File "/tmp/astropy-test-rp8r1_8c/lib/python3.6/site-packages/astropy/nddata/utils.py", line 370, in block_reduce
    from skimage.measure import block_reduce
  File "/home/travis/miniconda/envs/test/lib/python3.6/site-packages/skimage/measure/__init__.py", line 3, in <module>
    from ._marching_cubes_classic import (marching_cubes_classic,
  File "/home/travis/miniconda/envs/test/lib/python3.6/site-packages/skimage/measure/_marching_cubes_classic.py", line 3, in <module>
    from .._shared.utils import warn
  File "/home/travis/miniconda/envs/test/lib/python3.6/site-packages/skimage/_shared/utils.py", line 10, in <module>
    from ..util import img_as_float
  File "/home/travis/miniconda/envs/test/lib/python3.6/site-packages/skimage/util/__init__.py", line 8, in <module>
    from .arraycrop import crop
  File "/home/travis/miniconda/envs/test/lib/python3.6/site-packages/skimage/util/arraycrop.py", line 8, in <module>
    from numpy.lib.arraypad import _validate_lengths
ImportError: cannot import name '_validate_lengths'
/tmp/astropy-test-rp8r1_8c/lib/python3.6/site-packages/docs/nddata/index.rst:332: UnexpectedException

Issue Analytics

State:
Created 5 years ago
Comments:8 (8 by maintainers)

Top GitHub Comments

1reaction

bsipoczcommented, Mar 19, 2019

scikit-image 0.14.2 is available now both on conda and pip, so I’m closing this issue.

0reactions

pllimcommented, Jan 16, 2019

Attempting to hack around it at #8357

Top Results From Across the Web

Run all my doctests for all python modules in a folder ...

try: import simplejson as json except ImportError: import json. Update: Another option is to provide mock replacements for the missing modules.

Running single test function with `--doctest-modules` raises ...

Origin: question on SO Prep for reproducing: $ mkdir issue $ printf 'def test_spam():\n assert True\n' > issue/test_eggs.py $ pytest ...

sympy/__init__.py

As a special service "Fossies" has tried to format the requested source page into HTML format using (guessed) Python source code syntax ...

run doctests with nose — nose 1.3.7 documentation

DocTestCase # system version of doctest is acceptable, but needs a monkeypatch except (ImportError, AttributeError): # system version is too old import ......

verde.utils | Verde v1.7.0

if delayed: return dask.delayed(function) if client is not None: return ... data_names="dummy") >>> print(grid) # doctest: +SKIP <xarray.