SyntaxError: invalid syntax

[Hemantr05]

from dicom_contour.contour import *

File "C:\Users\abc\AppData\Local\Programs\Python\Python35\lib\site-packages\dicom_contour\contour.py", line 306
plt.imsave(new_path + f'/images/image_{i}.{img_format}', X[i, :, :])

SyntaxError: invalid syntax

How do I resolve this error?

[KeremTurgutlu]

Which python version are you using? It may not be supporting f strings. Use python 3.6+

[Hemantr05]

I use python 3.7 and yet it didn't work