TypeError: linear_fsa() takes 1 positional argument but 2 were given

[wangkaisine]

egs/librispeech/asr/simple_v1/run.sh

python3 ./mmi_mbr_train.py

2021-02-04 22:15:14,543 INFO [mmi_mbr_train.py:552] epoch 0, learning rate 0.001
Traceback (most recent call last):
File "./mmi_mbr_train.py", line 617, in
main()
File "./mmi_mbr_train.py", line 564, in main
global_batch_idx_train=global_batch_idx_train,
File "./mmi_mbr_train.py", line 280, in train_one_epoch
optimizer=optimizer)
File "./mmi_mbr_train.py", line 114, in get_loss
num_graph, den_graph, decoding_graph = graph_compiler.compile(texts, P)
File "/home/wangkaisine/anaconda3/lib/python3.6/site-packages/snowfall-0.1-py3.6.egg/snowfall/training/mmi_mbr_graph.py", line 142, in compile
File "/home/wangkaisine/anaconda3/lib/python3.6/site-packages/snowfall-0.1-py3.6.egg/snowfall/training/mmi_mbr_graph.py", line 187, in build_num_graphs
TypeError: linear_fsa() takes 1 positional argument but 2 were given

[csukuangfj]

Please use the latest k2.

pip install --pre k2

or install k2 from source.

---

[EDITED]
You may need to run pip uninstall k2 before running pip install --pre k2.

[csukuangfj]

pip install -r requirements.txt does not install the latest k2.

[csukuangfj]

The following link may be helpful:

https://k2.readthedocs.io/en/latest/installation.html