Python Basics
Python Basics

GENIE3||Gene regulatory network inference

... Luke
schedule1 min read
Python Basics

NicheNet || Intercellular Interaction Analysis

... Max
schedule1 min read
Python Basics

Numpy simple basics

... Bennett
schedule2 min read
Python Basics

scVelo

1. Import the required filesRequired files: 1. The loom file ran out of the velocyto pipeline derived from the data of the Seurat object in R 2. The cell name file 3. The group of the cell belongsLoom file for #RNA shearing information sample_one = anndata.read_loom("NC.loom") #Data.frame containing the cell name sample_obs = pd.read_csv("NC_cellID_obs.csv") #Data frame containing cell group annotation information cell_clusters = pd.read_csv("/NC_clusters.csv")2. Change the file cell name to mak

... Isabel
schedule2 min read
Advanced Python
trending_up Advanced Python

Why is it always Tunnel to when Android captures packets?

... Mackenzie
favorite 770
trending_up Advanced Python

Want to know all kinds of information about Marvel? Recommend you to use this API

... Adeline
favorite 1316
trending_up Advanced Python

Deep understanding of Python asynchronous programming

... Riley
favorite 480
trending_up Advanced Python

Why did I return a piece of JavaScript code when I requested a webpage

... Daisy
favorite 1318
trending_up Advanced Python

The top five inventory of programming languages ​​in 2021

... Lucas
favorite 1444
trending_up Advanced Python

[Fun with Tencent Cloud] 2020 programming language inventory outlook: Java veterans are not dead, Kotlin is ready to go

... Weston
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Python Web Development
Python Web Development

Use python to change the windows power-on password of the small partner, don’t give 10 yuan, no power-on

Author: LIUSE networkToday, I will teach you to use python scripts to control the power-on password of your friends' windows computers. That’s right, it’s a password generated randomly by random(), only you know it~ The code is divided into two parts, one part is the client side and the server side. You only need to figure out a way to let your partner run your client-side script and it's OK. But before that, you must run the server on your computer~ In this way, the client will randomly generat

... Ezekiel
schedule 3 min read
Python Web Development

A wrong love interview---iqiyiyunkai

Estimated reading: 8.5 minutesRecently, I have been making and sharing some personal experiences and exciting stories. Some of my friends communicated with me in the background, expressing whether they can have some interview skills or experience sharing. Well, after talking about the interview experience sharing for a long time, I can't take it off anymore. So what I brought this time is my previous experience of going to iQiyi to interview senior operation and maintenance development positions

... Eric
schedule 13 min read
Python Web Development

10 frequently asked questions in Python interviews

Source | segmentfaultText | xiaochaoOverviewPython is a very popular programming language. With the development of machine learning, cloud computing and other technologies in recent years, the demand for Python positions is getting higher and higher. Below I have collected 10 questions frequently asked by Python interviewers for your reference.Class inheritanceThere is the following piece of code:class A(object): def show(self): print'base show' class B(A): def show(self): print'derived show' ob

... Madison
schedule 5 min read
Machine Learning
Machine Learning

Identify according to the picture and return the verification code

from aip import AipOcr from PIL import Image import os def is_valid_image(img_path): """ Determine whether the file is a valid (complete) picture """ try: Image.open(img_path).verify() except Exception as e: e = e print('Picture is missing or damaged') return False return True def trans_img(img_path): """ Convert picture format :return: True: success False: failure """ if is_valid_image(img_path): try: img_name = img_path.split('.')[0] new_img_path = img_name + "(1).png" im = Image.open(img_path

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Machine Learning

day130-day132requests+selenium&thread pool&scrapy installation

1.requests simple crawler1.1 Rely on third-party tools# pip install requests # pip install lxml1.2lxml's xpath analysisfrom lxml import etree # Get page text web_response = requests.get(web_url, web_headers) web_response.encoding ='utf8' web_text = web_response.text# Generate etree object web_tree = etree.HTML(web_text)# etree object entry xpath analysis, return a list free_tags = web_tree.xpath('//div[@id="container"]/div/a')1.3注意点,xpath 解析，返回一个列表[0] # 取到某一个属性值# [0], mainly don’t mess up free_t

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Machine Learning

day120-day121-MongoDB's basic additions, deletions, changes, and use of pymongo

1. Comparison of MongoDB and MySQL# Comparison with MySQL MySQL MongoDB DB DB table Collections # Table row Documents # row <single data> column Field # field2. Field data types supported by MongoDB# Supported data types String # String, must be utf-8 Boolean # Boolean value, true or false (There is a pit here~ True False in our big Python, the first letter is capitalized) Integer # Integer (Int32 Int64, you just know that there is an Int, generally we use Int32) Double # Floating point nu

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Machine Learning

day119-Flask's websocket usage

# 着重注意前段 websocket 实例的函数内作用域问题1. Websocket group chat1.1 backend codeimport json from pprint import pprint from flask import Flask, request from geventwebsocket.handler import WebSocketHandler from gevent.pywsgi import WSGIServer from geventwebsocket.websocket import WebSocket # Use as a grammar prompt app = Flask(__name__) # list of websocket user_socket_dict = {} @app.route('/my_ws/<nick_name>') def ws(nick_name): print(nick_name +'connect server') # Record client information user_socket

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Machine Learning

day116-Flask's CBV&session advanced&Form&DBUtils database connection tool

1. Flask's CBV mode, inherits views.MethodViewfrom flask import Flask, views app = Flask(__name__) # Inherit views.MethodView class LoginView(views.MethodView): def get(self): return'get request' def post(self): return'post request' # The first parameter is the route, the second parameter is the specified class, pay attention to adding'login', similar to the endpoint parameter app.add_url_rule('/login', view_func=LoginView.as_view('login')) if __name__ =='__main__': app.run()2. The session is wr

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Machine Learning

day115-Flask's session & routing parameters & instantiation configuration & object configuration & blueprint & special decorator (middleware)

1. Simple example of authentication verification based on Flask session1.秘钥2.登录写进session3.装饰器&视图校验4.路由中定义 endpoint 参数from flask import Flask, render_template, redirect, request, session app = Flask(__name__) # step1: Give a secret key app.secret_key ='Leon \'s secret_key' @app.route('/', methods=['GET','POST']) def login(): if request.method =='POST': # step2 Write the secret key when logging in session['user'] = request.form.get('username','') return redirect('/detail') return render_templa

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Machine Learning

day114-Flask start & Response content & Request content & Template language

1. Flask start (start and run)from flask import Flask # Specify an app app = Flask(__name__) @app.route('/') # Specify the route def hello_world(): # Return a string return'Hello World' if __name__ =='__main__': app.run(debug=True, host="0.0.0.0", port=9527)2. The basic response of Flask2.1 return a stringfrom flask import Flask @app.route('/') # Specify the route def hello_world(): # Return a string return'Hello World' if __name__ =='__main__': app.run(debug=True, host="0.0.0.0", port=9527) 2.2

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