This adds support for pyusb dependency after v1.0.0b2 and
brings a chance to rely upon the system pyusb package instead
of a custom pip installation.
By v1.0.0b2 the public API of the library has changed, and the
'interface' parameter from 'usb.Device.write' method has disappeared.
This patch sets or avoids this parameter depending on the pyusb version
used.
X-original-commit: 312a161cacc7a04c2934a34ffb19cbf607462e69
In Python 3, ``print`` becomes a builtin function. This is available
in Python 2 by importing the ``print_function`` feature from
``__future__``, the feature is conveniently still available in Python
3 (it just does nothing).
Fixers:
libfuturize.fixes.fix_print_with_import
#8530
Some printers (e.g. matrix/impact printers) may have a hard time
keeping up with the text output, and may trigger timeout errors
because of this, even though they would otherwise produce a correct
result.
Increasing the default timeout to 5s (from the default 1s) should
take care of most slow printers out there.
Instead of hardcoding the IN & OUT endpoint
addresses for the ESC/POS printers, we now
attempt to auto-detect them.
This should increase compatibility with many
compatible thermal printers that are simply
using a different address, such as the
- STMicroelectronics POS58 Printer USB
- HU HAI SUNCSW Receipt Printer Co.,Ltd. Gprinter USB Printer
Fixes#12890
Although it might be a good idea to make sure a printer device is
properly closed, trying for >1 min to do so is too much. It can cause a
>1 min delay between receiving a receipt and actually printing. Also,
just because the device is not cleanly closed does not mean that it will
not work when we open it again.
Éloi Rivard