RuntimeError: threads can only be started once

[Edward-CNRG-NTU]

nengo-dl/nengo_dl/utils.py

Line 353 in b9e7ae5

return self.start()

---

Building network
Build finished in 0:00:01
|# Optimizing graph | 0:00:00Traceback (most recent call last):
File "MSO_model.py", line 158, in
run_MSO_model()
File "MSO_model.py", line 128, in run_MSO_model
sim = build_model()
File "MSO_model.py", line 119, in build_model
sim = nengo_dl.Simulator(model, dt=dt, unroll_simulation=1)
File "/home/cnrg-ntu/nengo-dl/nengo_dl/simulator.py", line 138, in init
max_value=None) as progress:
File "/home/cnrg-ntu/nengo-dl/nengo_dl/utils.py", line 353, in enter
return self.start()
File "/home/cnrg-ntu/nengo-dl/nengo_dl/utils.py", line 294, in start
self.thread.start()
File "/usr/lib/python2.7/threading.py", line 730, in start
raise RuntimeError("threads can only be started once")
RuntimeError: threads can only be started once
| # Optimizing graph | 0:00:00

---

just change to:

return self

seems to fix it.

[drasmuss]

I think you may have an older version of the progressbar2 package, if you do pip install progressbar2 --upgrade that should fix it.

[drasmuss]

The latest release updates the minimum progressbar version to 3.37.1, which should resolve this. Let me know if that isn't the case, and I'll reopen the issue!