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Today, I will talk to you about how to understand xml,configpraser and hashlib module, many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Write a XML file

Import xml.etree.ElementTree as ET

Namelist=ET.ElementTree ("namelist")

Generate the namelist into a root node

Name=ET.SubElement (namelist, "name", attrib= {"strinf": "yes", "name": "alex"})

Assign namelist attributes

Age=ET.SubElement (name, "age")

Create a child node under the root

Age.txt=27

Assignment

Role=ET.SubElement (name, "role")

Establish child nodes under the root

Role.txt= "teacher"

Et=ET.ElementTree (namelist)

Generate file object

Et.write ("test.xml", encoding= "utf-8", xml_declaration=True)

Write to a xml file

Configparser module: can generate and modify configuration files

Import configparser

Config=configparser.ConfigParser () # generate object

Config ["DEFAULT"] = {'Interval':'45'

'Compression':'yes'

'CompressionLevel':'9'}

Assign attributes to generate dictionaries

Config ['bitbucket.org'] = {} can be generated separately

Config ['bitbucket.org'] [' User'] = 'alex'# assignment

Config ['topsecret.server.com'] = {}

Topsecret=config ['topsecret.server.com']

Topsecret ['Host Port'] =' 50022'

Topsecret ['ForwardXll'] =' no'

Topsecret ['enabled'] =' YES'

Config ['DEFAULT'] [' ForwardXll'] = 'yes'

F=open ("config.ini",'w')

Config.write (f)

F.close ()

Add, delete and modify in the generated file

Import configparser

Config=configparser.ConfigParser ()

Config.read ("config1.ini")

Print (config.sections ()) # find the sections of the file

Config_name=config.sections () [1]

# find the corresponding value

Print (config[ config _ name] ["host port"])

Sec=config.remove_option (config_name,'forwardxll')

Delete the forwardx11 line

Config.set (config_name,'host port','3000')

Change the port number to 3000

Config.write (open ("config2.ini", "w"))

Hashlib module: used to verify the consistency of file contents

Import hashlib

M = hashlib.md5 ()

M.update (b "alex")

Print (m.hexdigest ())

M.update (b "li")

Print (m.hexdigest ())

Reading a line of md5 is no more memory-saving than reading the whole md5.

M2=hashlib.md5 ()

M2.update (b "alexli")

Print (m2.hexdigest ())

M2=hashlib.sha256 ()

M2.update (b "alexli")

Print (m2.hexdigest ())

Sha256 is safer than md5.

Salt adding algorithm is more secure.

Import hmac

Hamc_name=hmac.new (b "salt", b "hello")

Print (hamc_name.hexdigest ())

After reading the above, do you have any further understanding of how to understand xml,configpraser and hashlib modules? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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