The method of obtaining the minist data set

... downloads the minist data set on the official website, and the speed is moving. Therefore, I specially uploaded a copy for friends who need to download: minist data set The first time I opened this data set, it was also a look, but fortunately, the code for the pit is as follows: import...


With variable routing and GET, POST request to get

... from flask import render_template From flask import Flask From flask import Markup From flask import abort, redirect Import flask From flask App = Flask(__name__) @app.route('/') Def index(): Return redirect('/change') #redirect @app.route("/change") Def change(): Print("change into")...


Access rights in object-oriented

... 访问限制:限制别人调用某一些属性或者函数 好处:提高代码的安全性 做法:在名字前面加2个下划线__ 如果要赋值或者访问就必须提供setXXX或者getXxx函数 class Person: Def __init__(self): Self.name=None Self.__age=None Def setAge(self,age): If age<0: Print("Age is not legal") Else: Self.__age = age Def getAge(self): # return self.__age Print(self.__age) p...


Python crawler (first pass)

... When I was learning a crawler, I encountered an interesting website. This website has several levels. It needs to go through the crawler. As the level of the level is increased, the difficulty increases. In the process of Shaoguan, you need to learn different knowledge, and your level...


Sword refers to the number of 1 in the offer binary

... to the next level, the first thing that comes to mind is the division and rounding. If the rounding has 1, it adds 1 and then times out. The efficiency of the division is much lower than the bit operation. The interviewer will ask 果然 to use the profound bit operation, use n and 1 to...


[degree small full 2018-09-26 online written test] ONU

... title description ONU is a new type of board game, a deck of cards with a variety of colors, a total of N, and each card of each suit The same number. Now every time N, M is given, it means that there are at least M kinds of cards in this total of N cards. How many kinds of colors can...


Validation in Django|Login|Logout Function--views import django.contrib.auth authenticate()|login()|logout(). The

... authenticate()|login()|logout() function in django.contrib.auth is used. 验证|Login|Logout Function authenticate()--Login authentication: Accept two parameters, username|username password|password Returns a User object if it is legal. Not legal, return None. Use is not None else to...


Understanding of contrast loss (the more similar the similarity is):

... def contro_loss(self): ''' Summarize the characteristics of the contrast loss: first look at the label, then the label is 1 is positive, the negative pair is 0, and the minimum total loss is the minimum within loss (within_loss) part. The process of getting s close to the margin is an...


Python3-PyQt5-Eric6 installation steps

... From the installation of python3.7.0 to PyQt5 to Eric6 installation steps. 一, Python Installation Install python7.0, here choose to add Go to the system variable Next Select the path according to your needs, here I choose D:\Python37, then click instal to install Install Installation to...


What is the logger and handler in logging

... Python? The most recent task often involves the recording of logs, and deliberately learned the logging method again. Like java, python logging is a cumbersome thing to write a lot before writing a record. The typical logging step is this: Create a logger Create handler Definition...