在python XMLBuilder中添加带连字符的XML根属性

我正在与google checkout api集成，它们的所有属性都在属性值中包含连字符。因此，要创建对订单收费的请求，我需要发送一个xml帖子，如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<charge-and-ship-order xmlns="http://checkout.google.com/schema/2" google-order-number="6014423719">
    <amount currency="USD">335.55</amount>
</charge-and-ship-order>

我也试过：

>>> xml=XMLBuilder()
>>> with xml('charge-and-ship-order', {'xmlns':'xxx', 'google-order-number':'3433'}):
>>>     with xml << 'test'

你知道如何使用这样的属性吗？我正在使用位于的XMLBuilder库

---

您可以像这样在字典中传递属性：

function_call(**{'weird-named-key': 'value'})

SyntaxError: keyword can't be an expression

>>> xml=XMLBuilder()
>>> with xml('charge-and-ship-order', {'xmlns':'xxx', 'google-order-number':'3433'}):
>>>     with xml << 'test'

    File "/xmlbuilder/xmlbuilder/__init__.py", line 102, in __call__
    x(*dt,**mp)
    File "/xmlbuilder/xmlbuilder/__init__.py", line 36, in __call__
    text = "".join(dt)
    TypeError: sequence item 0: expected string, dict found

function_call(**{'weird-named-key': 'value'})