python修改远程linux机器xml标签的值

tree.write(xml_file)                   #将修改写入本地xml文件def prettyXml(element, indent, newline, level = 0): # elemnt为传进来的Elment类，参数indent用于缩进，newline用于换行
 if element: # 判断element是否有子元素
 if element.text == None or element.text.isspace(): # 如果element的text没有内容
 element.text = newline + indent * (level + 1)
 else:
 element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * (level + 1)
 #else: # 此处两行如果把注释去掉，Element的text也会另起一行
 #element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * level
 temp = list(element) # 将elemnt转成list
 for subelement in temp:
 if temp.index(subelement) < (len(temp) - 1): # 如果不是list的最后一个元素，说明下一个行是同级别元素的起始，缩进应一致
 subelement.tail = newline + indent * (level + 1)
 else: # 如果是list的最后一个元素， 说明下一行是母元素的结束，缩进应该少一个
 subelement.tail = newline + indent * level
 prettyXml(subelement, indent, newline, level = level + 1) # 对子元素进行递归操作xml_file = ‘/tmp/template.xml’
 create_Xml(xml_file)## 2 查看并修改xml文件内容


**查看所有的neighbor信息，并把attrib属性中’direction’为‘E’的修改为‘East’**for neighbor in root.iter(‘neighbor’):
 … if neighbor.attrib[‘direction’] == ‘E’:
 … neighbor.attrib[‘direction’] = ‘East’
 … print(neighbor.attrib)
 …
 {‘direction’: ‘East’, ‘name’: ‘Austria’}
 {‘direction’: ‘W’, ‘name’: ‘Switzerland’}
 {‘direction’: ‘N’, ‘name’: ‘Malaysia’}
 {‘direction’: ‘W’, ‘name’: ‘Costa Rica’}
 {‘direction’: ‘East’, ‘name’: ‘Colombia’}**获取country name和rank属性**for country in root.findall(‘country’):
 … rank = country.find(‘rank’).text
 … name = country.get(‘name’)
 … print(name, rank)
 …
 Liechtenstein 1
 Singapore 4
 Panama 68**在rank标签中新增attrib属性**for rank in root.iter(‘rank’):
 … new_rank = int(rank.text) + 1
 … rank.text = str(new_rank)
 … rank.set(‘updated’, ‘yes’)
 …
 tree.write(‘/tmp/output.xml’)修改后的xml文件如下： false 2 2008 141100 5 2011 59900 69 2011 13600 
## 3 删除xml文件内容


**删除rank > 3的country，删除builders下的hudson.tasks.Shell标签，并配置text为deleted**for country in root.findall(‘country’):
 … rank = int(country.find(‘rank’).text)
 … if rank > 3:
 … root.remove(country)
 …
 for builders in root.findall(‘builders’):
 … for shell in builders.findall(‘hudson.tasks.Shell’):
 … builders.remove(shell)
 … builders.text = ‘deleted’
 …
 tree.write(‘/tmp/output.xml’)修改后的xml文件： false 2 2008 141100 deleted 
当一个页签下面有多个子标签时使用remove删除发现一次删不全  
 比如下面文件<hudson.model.ListView>
 test_all


 compile
 get_node_list
 job_data
 new_job
 pipeline0
 pipeline1
 template
 test_1
 test_2
 test_3


 false
 </hudson.model.ListView>想删除jobNames标签下的所有string标签，可先获取string的数量num然后执行num次删除操作，删除部分代码参考如下root = tree.getroot()
 for i in range(0,self.num):
 for jobNames in root.findall(‘jobNames’):
 for string in jobNames:
 if string.text:
 jobNames.remove(string)