Python打印到/dev/usb/lp0

Question

我想从python代码打印到/dev/usb/lp0。在bash中非常简单：echo 'apple' >/dev/usb/lp0

我找到了linemode，但这不起作用。当我试图安装它时，我得到了这些错误。在

byte-compiling build/bdist.linux-x86_64/egg/linemode/renderers/xml.py to xml.pyc
File "build/bdist.linux-x86_64/egg/linemode/renderers/xml.py", line 67
def __init__(self, source, *, max_width=None, prelude=True):
                            ^
SyntaxError: invalid syntax

如何从python代码打印到/dev/usb/lp0？在

Answer 1

这是有效的：

 with open('/dev/usb/lp0', 'w') as printer:
            printer.write("Line 1\n")
            printer.write("Line 2\n")