使用minidom.toprettyxml时空行

Question

我一直在使用minidom.toprettyxml来美化我的xml文件.当我创建XML文件并使用这个方法时,所有工作都很好,但是如果我在修改了xml文件之后使用它(例如我添加了一个额外的节点)然后我将它写回XML ,我得到空行,每次我更新它,我越来越空行......

我的代码:

file.write(prettify(xmlRoot))


def prettify(elem):
    rough_string = xml.tostring(elem, 'utf-8') //xml as ElementTree
    reparsed = mini.parseString(rough_string) //mini as minidom
    return reparsed.toprettyxml(indent=" ")

结果:

<?xml version="1.0" ?>
<testsuite errors="0" failures="3" name="TestSet_2013-01-23 14_28_00.510935" skip="0"     tests="3" time="142.695" timestamp="2013-01-23 14:28:00.515460">




    <testcase classname="TC test" name="t1" status="Failed" time="27.013"/>




    <testcase classname="TC test" name="t2" status="Failed" time="78.325"/>


    <testcase classname="TC test" name="t3" status="Failed" time="37.357"/>
</testsuite>

有什么建议 ？

谢谢.

Answer 1

我在这里找到了一个解决方案:http://code.activestate.com/recipes/576750-pretty-print-xml/

然后我修改它以取一个字符串而不是文件.

from xml.dom.minidom import parseString

pretty_print = lambda data: '\n'.join([line for line in parseString(data).toprettyxml(indent=' '*2).split('\n') if line.strip()])

输出:

<?xml version="1.0" ?>
<testsuite errors="0" failures="3" name="TestSet_2013-01-23 14_28_00.510935" skip="0" tests="3" time="142.695" timestamp="2013-01-23 14:28:00.515460">
  <testcase classname="TC test" name="t1" status="Failed" time="27.013"/>
  <testcase classname="TC test" name="t2" status="Failed" time="78.325"/>
  <testcase classname="TC test" name="t3" status="Failed" time="37.357"/>
</testsuite>

这可以帮助您更轻松地将其用于您的功能:

def new_prettify():
    reparsed = parseString(CONTENT)
    print '\n'.join([line for line in reparsed.toprettyxml(indent=' '*2).split('\n') if line.strip()])

Answer 2

我找到了解决此问题的简单方法，只需更改您的最后一行prettify（）即可：

def prettify(elem):
rough_string = xml.tostring(elem, 'utf-8') //xml as ElementTree
reparsed = mini.parseString(rough_string) //mini as minidom
return reparsed.toprettyxml(indent=" ", newl='')