如何访问具有动态对象名称的 python 个对象？

Question

我对我的 python 脚本之一有疑问。我正在使用库 untangle (https://github.com/stchris/untangle) 将 xml 配置文件导入并转换到主脚本中。

问题：我在配置文件中有多个用户的用户信息，我在循环中使用这些信息。它工作得很好，但由于 xml 文件中生成的对象的名称，它使脚本非常丑陋。

具体这意味着我不能（或者我只是不知道如何）更改我想动态使用的对象的名称。

示例代码如下：

            if employee == 0:
                if str(configobj.config.modes.employee.employee_1.name.cdata) != '':
                    display.drawtext(0,0,str(configobj.config.modes.employee.employee_1.name.cdata),"7x13B",255,255,255,True)
                    if str(configobj.config.modes.employee.employee_1.line1.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_1.line1['x']),
                                         int(configobj.config.modes.employee.employee_1.line1['y']),
                    if str(configobj.config.modes.employee.employee_1.line2.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_1.line2['x']),
                                         int(configobj.config.modes.employee.employee_1.line2['y']),
                    if str(configobj.config.modes.employee.employee_1.line3.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_1.line3['x']),
                                         int(configobj.config.modes.employee.employee_1.line3['y']))
                    displayimage = True

            elif employee == 1:
                if str(configobj.config.modes.employee.employee_2.name.cdata) != '':
                    display.drawtext(0,0,str(configobj.config.modes.employee.employee_2.name.cdata),"7x13B",255,255,255,True)
                    if str(configobj.config.modes.employee.employee_2.line1.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_2.line1['x']),
                                         int(configobj.config.modes.employee.employee_2.line1['y']),
                    if str(configobj.config.modes.employee.employee_2.line2.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_2.line2['x']),
                                         int(configobj.config.modes.employee.employee_2.line2['y']),
                    if str(configobj.config.modes.employee.employee_2.line3.cdata) != '':
                        display.drawtext(int(configobj.config.modes.employee.employee_2.line3['x']),
                                         int(configobj.config.modes.employee.employee_2.line3['y']),
                    if str(configobj.config.modes.employee.employee_2.image.cdata) != '':
                        display.showimage(160,0,str(configobj.config.modes.employee.employee_2.image.cdata))
                    displayimage = True

而且这是很多重复的代码，而且数字不断变化。我该如何改进？

Answer 1

使用getattr:

getattr(configobj.config.modes.employee, 'employee_' + str(employee + 1)).name.cdata

您还可以为员工创建单独的变量：

employee = getattr(configobj.config.modes.employee, 'employee_' + str(employee + 1))
print(employee.name.cdata)
print(employee.line1['x'])

如何访问具有动态对象名称的 python 个对象？

How to access python objects with a dynamic object name?

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