[SOLVED] Problem running bridge.py

Official Hardware Classic Yún
1

I recently updated my Yun to OpenWrt 1.4.1. Now, I'm getting an error when I invoke bridge.begin() in my sketches and that's causing the sketch to hang. For example, if I do run-bridge I get a traceback:

root@Arduino6:/usr/lib/python2.7/bridge# exec python -u ./bridge.py
Traceback (most recent call last):
  File "bridge.py", line 32, in <module>
    import packet
  File "/usr/lib/python2.7/bridge/packet.py", line 31, in <module>
    from subprocess import call
  File "/usr/lib/python2.7/subprocess.py", line 432, in <module>
    import pickle
EOFError: EOF read where object expected

So, bridge.py doesn't get very far and the sketch hangs. Does anyone have any ideas what's causing this and how to fix it?
Thanks,
Mike

2

The problem appears to be fixed. I ran python -vc 'import pickle' and discovered that pickle.pyc seems to be corrupt. The output from running the command indicated that the first line of pickle.pyc could not be read. So I deleted pickle.pyc and ran the import command again. I noticed that pickle.pyc got rebuilt, but this time it worked. My conclusion is that the original file got buggered when I updated the OpenWrt. I wonder what other files are broken...

For now my sketch is working again.
Mike

3

Thanks @geezerEngineer this post really helped me out:

Was encountering a random EOFError when executing a standard lib module command (e.g. datetime.strptime()). Based on your post I suspected a corrupt compiled python file ...

The fix (drastic) was to delete all *.pyc files from /usr/lib/python2.7

It worked! I was having a really hard time bringing up a new system, and openwrt was crashing frequently. My guess is that it must have crashed in the middle of python first compiling something important ...

Hope this helps someone else