pybricks-micropython on the ev3dev V2 image has no wait in pybricks.tools

[BertLindeman]

I am checking V2 examples to see if they are V4.0.0.b7 compatible.
The pybricks-micropython on the V2 sd-card reports itself as

pybricks-micropython
Pybricks MicroPython v1.11 on 2020-05-06; linux version

From another post I remember that this is V2.

All doc about changed syntax in ev3 micropython doc does work on this micropython.

But

from pybricks.tools import wait

reports

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: no module named 'pybricks.tools.wait'

Is there a "better" pybricks-micropython V2 binary?
Or what is the old V2 syntax for wait?

Once I downloaded the pybricks-micropython from build 3357 and there is no wait in there too.
REPL shows:

Pybricks MicroPython v1.20.0-23-g6c633a8dd on 2024-04-04; LEGO MINDSTORMS EV3 Intelligent Brick with Texas Instruments AM1808

[dlech]

ImportError: no module named 'pybricks.tools.wait'

This is odd. I would expect this error message from import pybricks.tools.wait, but not from pybricks.tools import wait

I tried it here and it works at least from the REPL.

robot@pybricks-ev3:~$ pybricks-repl
Pybricks MicroPython v1.11 on 2020-05-06; linux version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> from pybricks.tools import wait
>>> wait(1000)
>>> 

Maybe you have something in sys.path that is messing it up? Check these directories:

>>> import sys
>>> sys.path
['', '', '/home/robot/.pybricks-micropython/lib', '/usr/lib/pybricks-micropython']

[BertLindeman]

Thanks David.

I see:

pybricks-micropython
Pybricks MicroPython v1.11 on 2020-05-06; linux version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> import sys
>>> sys.path
['', '', '/root/.pybricks-micropython/lib', '/usr/lib/pybricks-micropython']
>>> from pybricks.tools import wait
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: no module named 'pybricks.tools.wait'

As robot:

robot@ev3dev:/home/bert/py$ brickrun -r -- pybricks-micropython
Pybricks MicroPython v1.11 on 2020-05-06; linux version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> from pybricks.tools import wait
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: no module named 'pybricks.tools.wait'
>>> import sys
>>> sys.path
['', '', '/home/robot/.pybricks-micropython/lib', '/usr/lib/pybricks-micropython']

ll /home/robot/.pybricks-micropython/lib
ls: cannot access '/home/robot/.pybricks-micropython/lib': No such file or directory

ll /root/.pybricks-micropython/lib
ls: cannot access '/root/.pybricks-micropython/lib': No such file or directory

Do I miss something in the lib?

 l /usr/lib/pybricks-micropython
abc.mpy         curses/         gettext.mpy    _libc.mpy            pickle.mpy          readline.mpy      sqlite3.mpy     traceback.mpy       urequests.mpy
argparse.mpy    datetime.mpy    glob.mpy       linecache.mpy        pickletools.mpy     README            ssl.mpy         trace.mpy           urllib/
base64.mpy      dbm.mpy         gzip.mpy       locale.mpy           pkg_resources.mpy   README.rst        statistics.mpy  tty.mpy             urllib.mpy
binascii.mpy    decimal.mpy     hashlib/       logging.mpy          pkgutil.mpy         re.mpy            stat.mpy        types.mpy           utarfile.mpy
binhex.mpy      difflib.mpy     heapq.mpy      machine/             platform.mpy        reprlib.mpy       string.mpy      typing.mpy          uuid.mpy
bisect.mpy      email/          hmac.mpy       mailbox.mpy          poplib.mpy          runpy.mpy         stringprep.mpy  uaiohttpclient.mpy  uu.mpy
calendar.mpy    errno.mpy       html/          mailcap.mpy          posixpath.mpy       sched.mpy         struct.mpy      uasyncio/           venv.mpy
cgi.mpy         fcntl.mpy       http/          _markupbase.mpy      pprint.mpy          sdist_upip.mpy    subprocess.mpy  uasyncio.mpy        warnings.mpy
cmd.mpy         ffilib.mpy      imaplib.mpy    mimetypes.mpy        profile.mpy         select.mpy        sys.mpy         ucontextlib.mpy     weakref.mpy
codecs.mpy      fnmatch.mpy     imp.mpy        multiprocessing.mpy  pty.mpy             selectors.mpy     tarfile.mpy     ucurses/            xmltok.mpy
code.mpy        formatter.mpy   importlib.mpy  nntplib.mpy          pwd.mpy             shelve.mpy        telnetlib.mpy   udnspkt.mpy         zipfile.mpy
codeop.mpy      fractions.mpy   inspect.mpy    numbers.mpy          pyb.mpy             shlex.mpy         tempfile.mpy    umqtt/              zlib.mpy
collections/    ftplib.mpy      io.mpy         operator.mpy         pystone_lowmem.mpy  shutil.mpy        test/           unicodedata.mpy
concurrent/     functools.mpy   ipaddress.mpy  optparse.mpy         pystone.mpy         signal.mpy        textwrap.mpy    unittest.mpy
contextlib.mpy  __future__.mpy  itertools.mpy  os/                  queue.mpy           smtplib.mpy       threading.mpy   upip.mpy
copy.mpy        getopt.mpy      json/          pathlib.mpy          quopri.mpy          socket.mpy        timeit.mpy      upip_utarfile.mpy
csv.mpy         getpass.mpy     keyword.mpy    pdb.mpy              random.mpy          socketserver.mpy  time.mpy        upysh.mpy

[dlech]

/root/

You shouldn't be running as root!

Do I miss something in the lib?

I don't think so. I think we made the pybricks package frozen code.

[dlech]

ImportError: no module named 'pybricks.tools.wait'

I wonder if there is some non-printable character, like Windows line endings that is causing a problem.

[dlech]

I guess there wouldn't be Windows line endings if you are typing this into the REPL, but if you are copy/pasting it, maybe that could be the problem?

[dlech]

does just import pybricks or import pybricks.tools work?

[dlech]

Another difference is that I used pybricks-repl instead of brickrun -r -- pybricks-micropython. I don't remember if both work exactly the same. The difference would be automatically importing modules.

robot@pybricks-ev3:~$ pybricks-repl
Pybricks MicroPython v1.11 on 2020-05-06; linux version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> import sys
>>> sys.modules
{'pybricks.hubs': <module 'pybricks.hubs'>, 'pybricks.media.ev3dev': <module 'pybricks.media.ev3dev'>, 'pybricks.robotics': <module 'pybricks.robotics'>, 'media_ev3dev_c': <module 'media_ev3dev'>, 'core': <module 'core'>, 'pybricks.ev3devices': <module 'pybricks.ev3devices'>, 'pybricks.parameters': <module 'pybricks.parameters'>, 'pybricks': <module 'pybricks'>, 'pybricks.media': <module 'pybricks.media'>, 'pybricks.tools': <module 'pybricks.tools'>}

[BertLindeman]

Good suggestions David.
Thanks.

I took a shortcut and just booted a fresh downloaded image and that does not have the problem, so I must have messed up in the last 6 years somewhere.

Another difference is that I used pybricks-repl instead of brickrun -r -- pybricks-micropython. I don't remember if both work exactly the same. The difference would be automatically importing modules.

Correct David pybrick-repl does the auto import and 'brickrun -r -- pybricks-micropython' does not.

The base cause of this was a folder pybricks in my home. Although PYTHONPATH was empty.

Solved.
Thanks David.