Error 'WriteableBuffer' is not defined when using I2C device

[bzuu-ic]

After updating to version 5.1.3 of this library I am getting the error:

  File "<snip>/adafruit_bus_device/i2c_device.py", line 65, in I2CDevice
    self, buf: WriteableBuffer, *, start: int = 0, end: Optional[int] = None
NameError: name 'WriteableBuffer' is not defined

When looking at the i2c_device.py file I noticed the latest build for that file has failed as well with the same error, see:

https://github.com/adafruit/Adafruit_CircuitPython_BusDevice/runs/5070616660?check_suite_focus=true

[billvanleeuwen424]

Having this same issue upon updatng

[scarlettchen09]

I'm also having this issue after updating. Does anyone have any ideas or a fix? Kind of at a loss of what to do next and I need it for a critical application. I'll try downgrading now.

@bzuu-ic Thanks for reporting this. I am glad it isn't just me.

[billvanleeuwen424]

I'm also having this issue after updating. Does anyone have any ideas or a fix? Kind of at a loss of what to do next and I need it for a critical application. I'll try downgrading now.

@bzuu-ic Thanks for reporting this. I am glad it isn't just me.

Downgrading worked for me. There is probably a more intuitive way to do it, but just copying and replacing an older version of i2c_device.py worked for me

[bzuu-ic]

@billvanleeuwen424 Glad to hear you could solve it with a downgrade.

I am also trying to get it to work with a downgraded version, but am kind of stuck unfortunately with packaging with shiv. Although my Pipfile.lock explicitly states 5.1.2 it still ends up using 5.1.3 in the final package.

[dhalbert]

Upgrade adafruit-blinka as well. That should fix this error for now:

pip3 install --upgrade adafruit-blinka

[bzuu-ic]

@dhalbert Thanks, got it working again :)

[dhalbert]

Version 5.1.4 is now released and should fix this.