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urllib
urllib是用于打开URL的Python模块。
import urllib.request# open a connection to a URL using urllibwebUrl = urllib.request.urlopen('https://china-testing.github.io/address.html')#get the result code and print itprint ("result code: " + str(webUrl.getcode()))# read the data from the URL and print itdata = webUrl.read()print (data)图片.png
json
json是一种受JavaScript对象文字语法启发的轻量级数据交换格式。是目前互联网最流行的数据交换格式。
json公开了标准库marshal和pickle模块的用户所熟悉的API。
>>> import json>>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])'["foo", {"bar": ["baz", null, 1.0, 2]}]'>>> print(json.dumps("\"foo\bar"))"\"foo\bar">>> print(json.dumps('\u1234'))"\u1234">>> print(json.dumps('\\'))"\\">>> print(json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True))
{"a": 0, "b": 0, "c": 0}>>> from io import StringIO>>> io = StringIO()>>> json.dump(['streaming API'], io)>>> io.getvalue()'["streaming API"]'XML
XML即可扩展标记语言(eXtensible Markup Language)。它旨在存储和传输中小数据量，并广泛用于共享结构化信息。
import xml.dom.minidom
doc = xml.dom.minidom.parse("test.xml");# print out the document node and the name of the first child tagprint (doc.nodeName)print (doc.firstChild.tagName)# get a list of XML tags from the document and print each oneexpertise = doc.getElementsByTagName("expertise")print ("{} expertise:".format(expertise.length))for skill in expertise:
print(skill.getAttribute("name"))# create a new XML tag and add it into the documentnewexpertise = doc.createElement("expertise")
newexpertise.setAttribute("name", "BigData")
doc.firstChild.appendChild(newexpertise)print (" ")
expertise = doc.getElementsByTagName("expertise")print ("{} expertise:".format(expertise.length))for skill in expertise: print (skill.getAttribute("name"))图片.png
ElementTree是处理XML文件的简便方法。
import xml.dom.minidomimport xml.etree.ElementTree as ET
tree = ET.parse('items.xml')
root = tree.getroot()# all items dataprint('Expertise Data:')for elem in root: for subelem in elem:
print(subelem.text)
作者：python作业AI毕业设计
链接：https://www.jianshu.com/p/659288bb0833