$ python3
Python 3.8.0 (default, Oct 28 2019, 16:14:01)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import kaldifeat
>>> opts = kaldifeat.FbankOptions()
>>> print(opts)
frame_opts:
samp_freq: 16000
frame_shift_ms: 10
frame_length_ms: 25
dither: 1
preemph_coeff: 0.97
remove_dc_offset: 1
window_type: povey
round_to_power_of_two: 1
blackman_coeff: 0.42
snip_edges: 1
max_feature_vectors: -1


mel_opts:
num_bins: 23
low_freq: 20
high_freq: 0
vtln_low: 100
vtln_high: -500
debug_mel: 0
htk_mode: 0

use_energy: 0
energy_floor: 0
raw_energy: 1
htk_compat: 0
use_log_fbank: 1
use_power: 1
device: cpu

>>> print(opts.dither)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: '_kaldifeat.FbankOptions' object has no attribute 'dither'
>>>
>>> print(opts.frame_opts.dither)
1.0
>>> opts.frame_opts.dither = 0 # disable dither
>>> print(opts.frame_opts.dither)
0.0
>>> import torch
>>> print(opts.device)
cpu
>>> opts.device = 'cuda:0'
>>> print(opts.device)
cuda:0
>>> opts.device = torch.device('cuda', 1)
>>> print(opts.device)
cuda:1
>>> opts.device = 'cpu'
>>> print(opts.device)
cpu
>>> print(opts.mel_opts.num_bins)
23
>>> opts.mel_opts.num_bins = 80
>>> print(opts.mel_opts.num_bins)
80