keras: ImportError even though module is imported

Anyone ever came across this bug:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-23-cbcfc17289ab> in <module>()
      2 print('Done!')
      3 model_loaded = get_custom_CNN()
----> 4 model_loaded.load_weights('mdl.h5')

/usr/local/lib/python2.7/dist-packages/keras/models.pyc in load_weights(self, filepath, by_name)
    691     def load_weights(self, filepath, by_name=False):
    692         if h5py is None:
--> 693             raise ImportError('`load_weights` requires h5py.')
    694         f = h5py.File(filepath, mode='r')
    695         if 'layer_names' not in f.attrs and 'model_weights' in f:

ImportError: `load_weights` requires h5py.

after running this:

import h5py # version 2.7.0
print('Done!')
model_loaded = get_custom_CNN()  #this can really be any network that fits mdl.h5
model_loaded.load_weights('mdl.h5')

I even checked the exact condition (h5py is None is False) after seeing the actual code here: https://github.com/fchollet/keras/blob/master/keras/models.py

Keras 2.0.2, tf (1.0.0) backend. Tried:

Checking for mismatching environments
Importing h5py from scratch
Some old GH tickets suggested installing cython so i did that
Searching online

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 18 (1 by maintainers)

Most upvoted comments

Had same issue. I reinstalled h5py using pip and restarted the system. It worked.

+13

fedotv on Jun 18, 2017

So the way that i managed to get Keras to run was to add a cell with the below in it.

import h5py as h5py

then just re-run the cells above it after that and it should work.

EDIT: This was tested with the below versions: keras.version ‘2.0.3’ tf.version ‘1.1.0-rc0’

brendanodwyer on Apr 11, 2017

This issue is happening because of different version of keras and h5py.

Steps to solve

Remove “h5py” if you already installed pip uninstall h5py
Remove keras pip uninstall keras

3 . Now, Install keras, This will install updated and same version of keras and h5py pip install keras

dipakkr on Jun 12, 2018

For me I had to adjust keras.models.py file. (I am using keras 2).

replace line 24-27:

try: import h5py except ImportError: h5py = None

with just

import h5py

make sure you have h5py installed in your environment. Restart your jupyter notebook and should be good to go.

mhs321 on Sep 6, 2017

just install h5py using pipe install h5py

rebeen on Aug 3, 2017

When I first got this error, I use pip installed h5py, and then I still got this error. After reading all the comments above, I just closed my spyder IDLE and anaconda and reopened, then it works.

U-C-J on Dec 4, 2017

I also has same issue. it worked after installing h5py using pip

Mahedi-61 on Aug 6, 2017