Error while generating .npy file

[bsshruthi22]

Hi,
We are using TIMIT corpus to run SincNet. While generating TIMIT_labels.npy file, we are getting errors

Traceback (most recent call last):
File "test.py", line 11, in
a=open("labels.txt" ,'r') # labels.txt contains labels of form sentence id:speaker id ( {'TRAIN/DR5/FJXM0/SX311.WAV': 267,....}
np.save("TIMIT_labels",a)
File "/home/iiit_admin/.local/lib/python3.6/site-packages/numpy/lib/npyio.py", line 536, in save
pickle_kwargs=pickle_kwargs)
File "/home/iiit_admin/.local/lib/python3.6/site-packages/numpy/lib/format.py", line 629, in write_array
pickle.dump(array, fp, protocol=2, **pickle_kwargs)
TypeError: cannot serialize '_io.TextIOWrapper' object

Please let us know how to resolve this issue.