Python在Linux上直接向打印机打印字节字符串
临时文件可以使用Python在Linux上直接向打印机打印字节字符串,python,linux,printing,reportlab,Python,Linux,Printing,Reportlab,临时文件可以使用 subprocess.run(["lp", "-d", "<printer>", tmp]) 此代码启动打印作业,但大小为0k且状态为保持。我猜您缺少一个lpr.communicate()调用,请与以下内容进行比较: buffer = BytesIO() c = canvas.Canvas(buffer) c.drawString(100, 100, "Hello World") c.showPage() c.save() pdf = buffer.getva
subprocess.run(["lp", "-d", "<printer>", tmp])
此代码启动打印作业,但大小为
0k
且状态为保持。我猜您缺少一个lpr.communicate()
调用,请与以下内容进行比较:
buffer = BytesIO()
c = canvas.Canvas(buffer)
c.drawString(100, 100, "Hello World")
c.showPage()
c.save()
pdf = buffer.getvalue()
lpr = subprocess.Popen("/usr/bin/lpr", stdin=subprocess.PIPE)
lpr.stdin.write(pdf)
buffer.close()