模块urllib requests json xml configparser 学习笔记

Posted 2020-10-15 口水哥

发起http请求 获取返回值 返回值是字符串

第三方模块安装 pip install requests

返回值格式 xml  html  jaon

 json 

功能  loads   字符串》》》列表 字典 字符串里面必须是“”，因为其他的编程语言字符串都是“”

       dups      列表》》》字符串

xml

from xml.etree import ElementTree as ET
tree = ET.parse(‘1.xml‘)
root = tree.getroot()
print(type(root))

# <class ‘xml.etree.ElementTree.Element‘>
# dir(Element):
# append‘, ‘attrib‘, ‘clear‘, ‘extend‘, ‘find‘, ‘findall‘, ‘findtext‘, ‘get‘, ‘getchildren‘, ‘getiterator‘, ‘insert‘, ‘items‘, ‘iter‘, ‘iterfind‘, ‘itertext‘, ‘keys‘, ‘makeelement‘, ‘remove‘, ‘set‘, ‘tag‘, ‘tail‘, ‘text‘

 

<class ‘xml.etree.ElementTree.Element‘>

dir(Element):

append‘, ‘attrib‘, ‘clear‘, ‘extend‘, ‘find‘, ‘findall‘, ‘findtext‘, ‘get‘, ‘getchildren‘, ‘getiterator‘, ‘insert‘, ‘items‘, ‘iter‘, ‘iterfind‘, ‘itertext‘, ‘keys‘, ‘makeelement‘, ‘remove‘, ‘set‘, ‘tag‘, ‘tail‘, ‘text‘

from xml.etree import ElementTree as ET
tree = ET.parse(‘1.xml‘)

#ET.parse（添加文件路径）  ET.Element(文件节点，Element对象)

root = tree.getroot() son = root.makeelement("dat",{"k1":"k2"}) root.append(son) s = son.makeelement("tt",{"ks":"vs"}) son.append(s) tree.write("1.xml")
#添加子节点 孙子节点

添加子节点 孙子节点

from xml.etree import ElementTree as ET
tree = ET.parse(‘1.xml‘)
root = tree.getroot()
son = ET.Element("dat",{"k1":"k2"})
root.append(son)

tree.write("1.xml")
#直接根据类Element创建节点

直接根据类Element创建节点

 

from xml.etree import ElementTree as ET
tree = ET.parse(‘1.xml‘)
print(tree,type(tree))
from xml.etree.ElementTree import ElementTree  #用pychrm查找类ElementTree

#1   方法paese就是 调用ElementTree类 创建对象
#2   方法getroot 获取xml跟节点
#3   方法write 将创建的在内存的子节点 写入文件

 

#创建XML文档1
from xml.etree import ElementTree as ET
root = ET.Element("famliy")
son1 = ET.Element(‘son‘,{‘name‘:"er1"})
son2 = ET.Element(‘son‘,{‘name‘:"er2"})
root.append(son1)
root.append(son2)
sun1 = ET.Element(‘sun‘,{‘name‘:"s1"})
sun2 = ET.Element(‘sun‘,{‘name‘:"s2"})
son1.append(sun1)
son2.append(sun2)
tree = ET.ElementTree(root)
tree.write(‘1.xml‘)

# 创建XML文档2
from xml.etree import ElementTree as ET

root = ET.Element(‘famliy‘)
son1 = ET.SubElement(root,‘sun‘,attrib={‘name‘:"s1"})
son2 = ET.SubElement(root,‘sun‘,attrib={‘name‘:"s2"})
root.append(son1)
root.append(son2)
tree = ET.ElementTree(root)
tree.write(‘2.xml‘,encoding=‘utf-8‘)

# 创建XML文档3
from xml.etree import ElementTree as ET

# 创建根节点
root = ET.Element("famliy")


# 创建大儿子
# son1 = ET.Element(‘son‘, {‘name‘: ‘儿1‘})
son1 = root.makeelement(‘son‘, {‘name‘: ‘儿1‘})
# 创建小儿子
# son2 = ET.Element(‘son‘, {"name": ‘儿2‘})
son2 = root.makeelement(‘son‘, {"name": ‘儿2‘})

# 在大儿子中创建两个孙子
# grandson1 = ET.Element(‘grandson‘, {‘name‘: ‘儿11‘})
grandson1 = son1.makeelement(‘grandson‘, {‘name‘: ‘儿11‘})
# grandson2 = ET.Element(‘grandson‘, {‘name‘: ‘儿12‘})
grandson2 = son1.makeelement(‘grandson‘, {‘name‘: ‘儿12‘})

son1.append(grandson1)
son1.append(grandson2)


# 把儿子添加到根节点中
root.append(son1)
root.append(son1)

tree = ET.ElementTree(root)
tree.write(‘oooo.xml‘,encoding=‘utf-8‘, short_empty_elements=False)

创建方式（二）

 

#带缩进的创建xml 
from xml.etree import ElementTree as ET

root = ET.Element(‘famliy‘)
son1 = ET.SubElement(root,‘sun‘,attrib={‘name‘:"s1"})
son2 = ET.SubElement(root,‘sun‘,attrib={‘name‘:"s2"})
root.append(son1)
root.append(son2)
def MyWrite(root,name):
    from xml.dom import minidom
    rough_string = ET.tostring(root, ‘utf-8‘)
    reparsed = minidom.parseString(rough_string)
    new_str = reparsed.toprettyxml(indent="\t")

    f = open(name, ‘w‘, encoding=‘utf-8‘)
    f.write(new_str)
    f.close()

MyWrite(root,"5.xml")

configparser用于处理特定格式的文件

特定格式
# 注释1
;  注释2
 
[section1] # 节点
k1 = v1    # 值
k2:v2       # 值
 
[section2] # 节点
k1 = v1    # 值

import configparser
con = configparser.ConfigParser()
con.read(‘in‘,encoding=‘utf-8‘)
result = con.sections()
print(result)
ret = con.options(‘section1‘)
print(ret)