Python H5PY ioerror: unable to open file… error message = 'no such file or directory'

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Windows

Python

OpenCV

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Please help me this is urgent.!
By the way I am using Window 10 x64
I am getting error while

data_loc = os.path.join('data', 'datasets', data_code + '.hdf5')
data = h5py.File(data_loc, 'r')

I run
'python train.py fcn_rffc4 brats_fold0 brats_fold0 600 -ch False' command

Error is shortly, IOError Unable to open file.... beacuse 'no such file or directory'
Long error that I got is :


Traceback (most recent call last):
File "train.py", line 305, in
start_training(model_code, data_code, checkpoint, max_passes=n_epochs, train_dir=train_dir)

File "train.py", line 273, in start_training
coach, model_def = setup_training(model_code, data_code, checkpoint, max_passes)

File "train.py", line 140, in setup_training
train, valid, test = retrieve_data(data_code=data_code)

File "train.py", line 57, in retrieve_data
data = h5py.File(data_loc, 'r')

File "C:\Users\yunus\Anaconda3\envs\medical_image\lib\site-packages\h5py_hl\files.py", line 271, in init
fid = make_fid(name, mode, userblock_size, fapl, swmr=swmr)

File "C:\Users\yunus\Anaconda3\envs\medical_image\lib\site-packages\h5py_hl\files.py", line 101, in make_fid
fid = h5f.open(name, flags, fapl=fapl)

File "h5py_objects.pyx", line 54, in h5py._objects.with_phil.wrapper

File "h5py_objects.pyx", line 55, in h5py._objects.with_phil.wrapper

File "h5py\h5f.pyx", line 78, in h5py.h5f.open
IOError: Unable to open file (Unable to open file: name = 'data\datasets\brats_fold0.hdf5', errno = 2, error message = 'no such file or directory', flags = 0, o_flags = 0)

What I have tried:

I tried a lot but could not solve it do u have any suggestion about how to solve it !!