如何使用python xml.etree用換行符獲取xml輸出？

Question

我正在使用“從xml.etree import ElementTree”生成xml文件，並將生成的輸出放入新文件“ test.xml”中。 輸出將放置在test.xml內，但是沒有新行是很大的一行。 因此，我應該怎么做才能在“ test.xml”中插入新行。 以下是腳本：

from xml.etree import ElementTree
from xml.dom import minidom
from lxml import etree
def prettify(elem):
    """Return a pretty-printed XML string for the Element.
    """
    rough_string = ElementTree.tostring(elem, 'utf-8')
    reparsed = minidom.parseString(rough_string)
    return reparsed.toprettyxml(indent="  ")
top = Element('my_document')
comment = Comment('Practising')
top.append(comment)
child = SubElement(top, 'my_information')
childs = SubElement(child,'my_name')
childs.text = 'This child contains text.'
print prettify(top)
file = open("test.xml", 'w')
xml.ElementTree(top).write(file)
file.close()

Answer 1

您為什么不使用prettify的返回值？ 編寫函數的返回值將解決您的問題。

...
top = Element('my_document')
comment = Comment('Practising')
top.append(comment)
child = SubElement(top, 'my_information')
childs = SubElement(child,'my_name')
childs.text = 'This child contains text.'
with open("test.xml", 'w') as f:  # <--
    f.write(prettify(top))        # <--