Error: Printer can be specified either String or os open call about brother_ql HOT 6 CLOSED

As 7ab1e67 is now part of the latest release v0.9.2, which can be installed using pip install --upgrade brother_ql, I'll close this issue. Thanks again for reporting.

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Now I upgraded python to 3.6 but the issue is still present.

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from brother_ql.

Experiencing the same issue. Also tried passing them on the command-line rather than environment variables:

brother_ql --printer tcp://192.168.1.142 --model QL-1060N print -l 102x152 test.png

Results in:

NotImplementedError: Currently the printer can be specified either via an appropriate string or via an os.open() handle.

Using default Python 2.7.13 bundled with Mac OS X.

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I had the same issue a few days ago, it seems for some reason the script is not recognizing the exported variables, try passing them as command line variables:

sudo brother_ql -p usb://04f9:0242 -m QL-1060N print -l 102x152 test.png

Note: the size is very important if you do not know the size, you can try -l 62 it seems to work with different sizes. Also make sure that you have pyusb installed.

pip install pyusb

You may need to run the command as sudo.

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Alright, I did investigate this issue. The problem reported by @hydroid7 and @christianflintrup is a Python 2 compatibility issue. This is now fixed with the latest commit 7ab1e67.

@uched41: The problem you reported by is a different one. You are using the sudo command to run the brother_ql CLI. The sudo tool is stripping away the environment variable. A quick workaround would be to use sudo -E .... The better solution is to set up a udev .rules file to set the permission on your USB device correctly so that you don't need to use sudo at all.

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