ImportError: cannot import name '_validate_lengths'

Question

I have started learning Tensorflow. I am using Pycharm and my environment is Ubuntu 16.04. I am following the tutorial. I cross check the nump. It is up-to-date. I don't know the reason of this error.

from numpy.lib.arraypad import _validate_lengths

ImportError: cannot import name '_validate_lengths'

Need hint to resolve this error. Thank you.

import tensorflow as tf
from skimage import transform
from skimage import data
import matplotlib.pyplot as plt
import os
import numpy as np
from skimage.color import rgb2gray
import random

#listdir: This method returns a list containing the names of the entries in the directory given by path.
# Return True if path is an existing directory

def load_data(data_dir):
    # Get all subdirectories of data_dir. Each represents a label.
    directories = [d for d in os.listdir(data_dir)
                   if os.path.isdir(os.path.join(data_dir, d))]
    # Loop through the label directories and collect the data in
    # two lists, labels and images.
    labels = []
    images = []
    for d in directories:
        label_dir = os.path.join(data_dir, d)
        file_names = [os.path.join(label_dir, f)
                      for f in os.listdir(label_dir)
                      if f.endswith(".ppm")]
        for f in file_names:
            images.append(data.imread(f))
            labels.append(int(d))
    return images, labels


ROOT_PATH = "/home/tahir/PhD Study/Traffic Signs Using Tensorflow/"
train_data_dir = os.path.join(ROOT_PATH, "TrafficSigns/Training")
test_data_dir = os.path.join(ROOT_PATH, "TrafficSigns/Testing")

images, labels = load_data(train_data_dir)

# Print the `images` dimensions
print(images.ndim)

# Print the number of `images`'s elements
print(images.size)

# Print the first instance of `images`
images[0]

Take a look at https://github.com/scikit-image/scikit-image/issues/3586 — cdarke, Jan 17 '19 at 17:29

Wey Shi · Accepted Answer · 2019-01-20T16:48:48.707

I updated my skimage package.

pip install --upgrade scikit-image

And the problem was solved. It's a problem of version of Skimage, which is solved in 0.14.2. PLus, this version is quite stable.

    Installing collected packages: dask, scikit-image
  Found existing installation: dask 0.19.1
    Uninstalling dask-0.19.1:
      Successfully uninstalled dask-0.19.1
  Found existing installation: scikit-image 0.13.0
    Uninstalling scikit-image-0.13.0:
      Successfully uninstalled scikit-image-0.13.0
Successfully installed dask-1.0.0 scikit-image-0.14.2

score 5 · Answer 2 · answered Apr 23 '19 at 12:33

5

scikit-image 0.14.2 worked with numpy 1.16.3. I installed numpy first and then installed scikit image

answered Apr 23 '19 at 12:33

Alka

51
1
1

now the previous error is gone but getting this new error: Got this error ImportError: cannot import name 'img_as_float32'. Using Version of Numpy: 1.17.0 & skimage: 0.13.0 – Yogesh Awdhut Gadade Aug 24 '19 at 07:03

eaithy · Answer 3 · 2019-09-27T12:03:46.423

4

pip install scikit-image==0.14.2 && pip install numpy==1.15

Ref: Here

edited Sep 27 '19 at 12:03

answered Sep 27 '19 at 11:02

eaithy

234
2
6

score 2 · Answer 4 · answered Apr 29 '19 at 16:59

2

I had the same error, I did the following steps:

uninstall scikit-image

pip uninstall scikit-image

or

conda uninstall scikit-image

and then

pip install scikit-image

or

conda install -c conda-forge scikit-image

answered Apr 29 '19 at 16:59

ErenO

231
2
4

After following the above steps getting this error: ImportError: cannot import name 'img_as_float32'. Using Version of Numpy: 1.17.0 & skimage: 0.13.0, Python 3 – Yogesh Awdhut Gadade Aug 24 '19 at 07:03
If you are in a jupyter notebook, do not forget to add the --y argument, like !conda uninstall scikit-image --y or !conda install -c conda-forge scikit-image --y – Ivan Apr 10 '20 at 14:54

score 1 · Answer 5 · answered Mar 30 '20 at 15:57

1

For me the magic dependency was:

pip install scikit-image==0.13.1
pip install numpy==1.15

For python 3.5 and python 3.6

answered Mar 30 '20 at 15:57

Guy Gaziv

19
5

score 0 · Answer 6 · answered Apr 23 '20 at 04:22

upgrade scikit-image to latest, OR downgrade NumPy to 1.15.

 pip install -U scikit-image

or

 pip install numpy==1.15

if the pip isn't latest. You may need this:

python -m pip install --upgrade pip

refer to Getting ImportError: cannot import name '_validate_lengths' #3906 .

score -1 · Answer 7 · edited Mar 03 '20 at 06:11

-1

Seems I also had the same issue due to two versions installed sametime.

I solved it by uninstalling scikit-image multiple times till none was left.

pip uninstall scikit-image

Then Reinstall:

pip uninstall scikit-image

It worked for me.

edited Mar 03 '20 at 06:11

Calos

1,783
19
28

answered Mar 03 '20 at 05:16

user12997402

1

ImportError: cannot import name '_validate_lengths'

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