我想使用python更改打印机的托盘。我尝试使用以下代码来检索有关打印机及其值的信息:
import win32print
x = win32print.DeviceCapabilities('Name of my printer', '192.168.x.x', DC_BINS)
print (x)
DC_BINS应该给我一个int序列。每个都属于不同的托盘。但是,当我尝试运行时,该程序会说" DC_BINS"没有定义。我究竟做错了什么?我对python很新。
答案 0 :(得分:2)
您的代码已更正:
import win32print
import win32con
x = win32print.DeviceCapabilities('Name of my printer', '192.168.x.x', win32con.DC_BINS)
print (x)
代码列出了所有打印机,本地和远程以及他们的功能:
import win32print
from win32con import *
DC_CONSTANTS = [
DC_BINNAMES, DC_BINS, DC_COLLATE, DC_COLORDEVICE, DC_COPIES, DC_DRIVER,
DC_DUPLEX, DC_ENUMRESOLUTIONS, DC_EXTRA, DC_FIELDS,
DC_FILEDEPENDENCIES, DC_MAXEXTENT, DC_MEDIAREADY, DC_MEDIATYPENAMES,
DC_MEDIATYPES, DC_MINEXTENT, DC_ORIENTATION, DC_NUP, DC_PAPERNAMES,
DC_PAPERS, DC_PAPERSIZE, DC_PERSONALITY, DC_PRINTERMEM, DC_PRINTRATE, DC_PRINTRATEPPM,
DC_PRINTRATEUNIT, DC_SIZE, DC_STAPLE, DC_TRUETYPE, DC_VERSION,
]
def DC_INFO(constant):
for a_global in globals().keys():
if a_global.startswith("DC_") and globals().get(a_global) == constant:
return a_global
return "DC_UNKONWN"
for printer in win32print.EnumPrinters(win32print.PRINTER_ENUM_LOCAL | win32print.PRINTER_ENUM_CONNECTIONS):
print printer
for constant in DC_CONSTANTS:
try:
x = win32print.DeviceCapabilities(printer[2], '', constant)
print "\t", DC_INFO(constant), x
except:
pass
我建议使用IDE进行python,好的IDE会标记未知符号并建议从哪里导入(如PyCharm那样)。