1 #!/usr/bin /env python 2 import configparser 3 config = configparser.ConfigParser() 4 config.read(‘a.txt‘, encoding=‘utf-8‘) 5 ret = config.sections()                     #获取所有节点名 6 print(ret) 7  8 ret = config.options(‘test1‘)               #获取指定节点下的key 9 print(ret)10 11 ret = config.get(‘test1‘, ‘k1‘)               #获取指定节点下的值12 print(ret)13 14 has = config.has_section(‘test1‘)               #验证是否包含节点15 print(has)16 17 has = config.has_section(‘tttt1‘)               #验证是否包含节点18 print(has)19 20 config.add_section(‘tttt1‘)                     #加节点(节点不可以存在)21 config.write(open(‘a.txt‘, ‘w‘, encoding=‘utf-8‘))22 23 config.remove_section(‘tttt1‘)                  #删节点（节点存在）24 config.write(open(‘a.txt‘, ‘w‘, encoding=‘utf-8‘))25 26 has = config.has_option(‘tttt1‘, ‘k1‘)               #验证是否包含节点内的key27 print(has)28 29 config.add_option(‘tttt1‘, ‘k1‘)                     #加节点内key（节点存在）30 config.write(open(‘a.txt‘, ‘w‘))31 32 config.remove_option(‘tttt1‘, ‘k1‘)                  #删节点内key（节点存在）33 config.write(open(‘a.txt‘, ‘w‘))

1 [test1]2 k1 = v13 k2 = 1234 5 [test2]6 k1 = ace7 8 [test3]9 k1 = kkk

1 #!/usr/bin /env python2 from xml.etree import ElementTree as ET3 tree = ET.parse(‘a.xml‘)4 root = tree.getroot()                           #获取根节点5 #print(root)6 for child in root:                              #打印子节点7     # print(child.tag, child.attrib)8      for cchild in child:9          print(cchild.tag, cchild.attrib,cchild.text)       #命名，标注，值

1 C:\Users\Administrator\AppData\Local\Programs\Python\Python35\python.exe C:/Users/Administrator/PycharmProjects/ACE/study7/s2.py2 rank {‘updatae‘: ‘yes‘} 23 year {} 20164 mounth {} None5 6 Process finished with exit code 0

1 <data title="CEO" age="24">2     <country name="china" age="22">3         <rank updatae="yes">2</rank>4         <year>2016</year>>5         <mounth />6     </country>7     <country name="abc" />8 </data>

 1 #!/usr/bin /env python 2 from xml.etree import ElementTree as ET 3 from xml.dom import minidom 4  5  6 def prettify(elem): 7     """ 8     将节点转换成字符串 9     :param elem:节点10     :return:字符串11     """12     r_string = ET.tostring(elem, encoding=‘utf-8‘)13     rep = minidom.parseString(r_string)14     return rep.toprettyxml(indent=‘\t‘)15 16 17 root = ET.Element(‘family‘)                                 #根节点命名18 19 son1 = ET.Element(‘son‘, {‘name‘: ‘son1‘})                  #子节点命名20 son2 = ET.Element(‘son‘, {‘name‘: ‘son2‘})21 22 if __name__ == ‘__main__‘:23     grandson1 = ET.Element(‘grandson‘, {‘name‘: ‘grandson1‘})   #孙节点命名...24 grandson2 = ET.Element(‘grandson‘, {‘name‘: ‘grandson2‘})25 son1.append(grandson1)                                             #子节点添加孙节点26 son2.append(grandson2)27 28 root.append(son1)                                                   #根节点添加子节点29 root.append(son2)30 31 # tree = ET.ElementTree(root)                                         #将整体写入文件（一行形式）32 # tree.write(‘b.xml‘, encoding=‘utf-8‘, short_empty_elements=False)33 34 raw_str = prettify(root)35 36 with open(‘b.xml‘, ‘w‘, encoding=‘utf-8‘) as f:37     f.write(raw_str)

1 <?xml version="1.0" ?>2 <family>3     <son name="son1">4         <grandson name="grandson1"/>5     </son>6     <son name="son2">7         <grandson name="grandson2"/>8     </son>9 </family>

 1 #!/usr/bin /env python 2 class F1: 3  4     def show(self): 5         print(‘show‘) 6  7     def foo(self): 8         print(self.name) 9 10 11 class F2(F1):12 13     def __init__(self, name):14         self.name = name15 16     def bar(self):17         print(‘bar‘)18 19     def show(self):20         print(‘show 2‘)21 22 obj = F2(‘ace‘)23 obj.foo()

1 C:\Users\Administrator\AppData\Local\Programs\Python\Python35\python.exe C:/Users/Administrator/PycharmProjects/ACE/study7/s6.py2 ace3 4 Process finished with exit code 0

 1 #!/usr/bin /env python 2 class c1: 3  4     def __init__(self, name, obj): 5         self.name = name 6         self.obj = obj 7  8     def show(self): 9         print(self.name)10         print(self.obj)11 12 13 class c2:14 15     def __init__(self, name, age):16         self.name = name17         self.age = age18 19     def show(self):20         print(self.name)21         print(self.age)22         return ‘meng‘23 24 25 class c3:26     def __init__(self, a1):27         self.aaa = a128 29 30 c2_obj = c2(‘a‘, ‘11‘)31 c1_obj = c1(‘ace‘, c2_obj)32 print(c1_obj.obj.age)33 c3_obj = c3(c1_obj)34 print(c3_obj.aaa.obj.name)35 print(c3_obj.aaa.obj.show())

1 C:\Users\Administrator\AppData\Local\Programs\Python\Python35\python.exe C:/Users/Administrator/PycharmProjects/ACE/study7/s5.py2 113 a4 a5 116 meng7 8 Process finished with exit code 0

 1 #!/usr/bin /env python 2 class SQLHELP: 3     def __init__(self, a1, a2, a3): 4         self.hhost = a1 5         self.uusername = a2 6         self.ppassword = a3 7  8     def fetch(self, sql): 9         print(self.hhost)10         print(self.uusername)11         print(self.ppassword)12         print(sql)13 14 obj1 = SQLHELP(‘localhost‘, ‘root‘, ‘redhat‘)15 obj1.fetch(‘select * from *‘)