AttributeError: 'module' object has no attribute 'USB'

[awesomer]

$ python alphasign_example.py
Traceback (most recent call last):
File "alphasign_example.py", line 37, in
main()
File "alphasign_example.py", line 6, in main
sign = alphasign.USB(alphasign.devices.USB_BETABRITE_PRISM)
AttributeError: 'module' object has no attribute 'USB'

$ python -V
Python 2.7.13
$ which python
/usr/local/bin/python

Platform is OSX Sierra 10.12.6, I'm using python 2.7 from homebrew. Betabrite Prism USB-only version connected via USB. I've installed alphasign, libusb, pyusb and pyserial via pip. I have also installed libusb via "brew install libusb".

The alphasign_example is your example code from readthedocs, copy and pasted.

Thanks for this full featured looking module, any assistance getting it working in my env is greatly appreciated.

Edit -- Device shows up to OSX as follows

USB-BULK Device:
Product ID: 0x1234
Vendor ID: 0x8765
Version: 0.01
Serial Number: 123456
Speed: Up to 12 Mb/sec
Manufacturer: ADAPTIVE
Location ID: 0x14100000 / 14
Current Available (mA): 500
Current Required (mA): 100
Extra Operating Current (mA): 0

which matches the constant from devices.py

• :const:USB_BETABRITE_PRISM = (0x8765, 0x1234)

Edit 2 :
I look in /usr/local/lib/python2.7/site-packages/alphasign/interfaces/local.py and do not see a USB interface? grep -R USB in the base of the package does not find any results either.

Edit 3 :
Turns out homebrew + pip installs an ancient version of alphasign, 0.9, even though PyPi has 1.0.

I installed via

python setup.py install

from github head and my problem is resolved. Sorry for the noise, but hopefully it will be useful google fodder for future users.

[braveulysses]

It looks like PyPI has download files for 0.9 but not for 1.0, which is why pip always installs alphasign 0.9.

I was able to install the latest version from this GitHub repo using this pipenv command. I assume the pip command is similar: pipenv install -e git+https://github.com/msparks/alphasign.git#egg=alphasign

[wmartin2]

I get the same error message as the original poster for this issue:

AttributeError: module 'alphasign' has no attribute 'USB'

I am using alphasign 1.0 using python3:

pip list | grep alphasign

Package Version

---

alphasign 1.0

from importlib.metadata import version
version('alphasign')
'1.0'

The serial port is:

sudo setserial -g /dev/ttyUSB[01]
/dev/ttyUSB0, UART: unknown, Port: 0x0000, IRQ: 0

What is the method for specifying the serial port for alphasign 1.0?