import nibabel as nib
from scipy import ndimage
from scipy import misc

img = nib.load(filepath)
data = img.get_fdata()

# I would like to insert code here that creates an nii file in the current directory

while x < max:
    slice = data[x,:,:]
    slice = blur(slice)

    # I would like to insert code here that writes slice by slice to the nii file above.

    x = x + 1