Unexpected behavior with gridrec and filter_name

[carterbox]

I experienced unexpected behaviour when using filters and gridrec. Given the following example,

import tomopy

# set data and theta here

for params in [
    {'algorithm': 'gridrec'},
    {'algorithm': 'gridrec', 'filter_name': 'none'},
    {'algorithm': 'gridrec', 'filter_name': None},
]:
    recon = tomopy.recon(data, theta, **params)

I would expect these reconstructions to be the same. However, they are not. Here are the reconstructed images all scaled to the same range:
# no filter_name, but the default is shepp

'none'

None

This is with tomopy=1.2.1. Any thoughts? Should I correct this?

[dgursoy]

Neither nones seems correct. 😳

[prjemian]

Y'all speakin Southern a'gin? Yet I agree.