Python crawler super detailed explanation (zero basic introduction, which can be understood by the elderly)
Before we explain our crawler, we will first outline the simple concept of crawler (after all, it is a zero foundation tutorial)
Reptile
Web crawler (also known as web spider, web robot) is a program that simulates the browser to send web requests and receive request responses. It is a program that automatically grabs Internet information acc ...
Added by kfir91 on Tue, 21 Sep 2021 02:25:17 +0300
Big data - Python data analysis 2 (numpy module)
Catalog
Preface
Create a matrix (using ndarray objects)
Get the number of rows and columns of a matrix (in two dimensions)
Interception of Matrix
Intercept by row and column
Conditional interception
Combination of matrices
Create Matrix by Function
arange
linspace
logspace
ones,zeros,eye,empty
fromstring
fromfunction
Operations ...
Added by DarkArchon on Tue, 21 Sep 2021 00:49:46 +0300
Raspberry Pie Visual Cart Globe Tracking (Color Tracking) (OpenCV Color Space HSV)
Catalog
Basic Theory (HSV)
Why use HSV space instead of RGB space?
HSV
1. Hue (hue)
2. Value (lightness)
3. Saturation
Effect Display
I. Initialization
Slider initialization
1. Create callback functions
2. Window Settings (Name)
3. Slider bar settings
Code
2. Motion Functions
3. Helicopter Control
4. Obtaining binary maps in HSV ...
Added by kishanforum on Mon, 20 Sep 2021 21:18:40 +0300
python wechat chat robot is no longer afraid of being praised for its high Eq
Writing this chat robot is purely fun, it is not practical!!!
Realization idea
In the past, many wechat robots relied on the itchat in python to write, because at that time, the wechat web page was still developed for most users, and the itchat module operated on the wechat web page (it felt like a crawler). But now many people's wechat ca ...
Added by ~J~R~R on Mon, 20 Sep 2021 17:48:37 +0300
September 15 knowledge sorting
September 15 knowledge sorting
1, Variable
1. Define multiple variables at the same time
1) Define the same value of multiple variables at the same time:
Variable name 1 = variable name 2 = variable name 3 =... = Data
Example:
x = y = z = 0
print(x, y, z)
2) Define multiple variables at the same time and as ...
Added by macpaul on Sun, 19 Sep 2021 04:10:00 +0300
Zero basis introduction financial risk control - loan default prediction - machine learning - Data Analysis
Zero basis entry financial risk control - loan default forecast
1, Competition data
The task of the competition is to predict whether users default on their loans. The data set can be seen and downloaded after registration. The data comes from the loan records of A credit platform. The total amount of data exceeds 120w, including 47 columns o ...
Added by MrPotatoes on Sun, 19 Sep 2021 00:56:38 +0300
tensorflow study notes
First, the first question: what is tensorflow? It is an open source software library for solving numerical calculation based on data flow graph. Now it is mainly used for in-depth learning. In my understanding, tensorflow can complete the construction of neural network and carry out a ser ...
Added by curb on Wed, 15 Sep 2021 22:10:05 +0300
Python crawler - hands teach you to climb the skin of the king's glory hero
hello everyone! I'm Lin hero
You know which is the hottest mobile game at present. Yes, it is the glory of the king. This mobile game must have been heard or played by everyone. There are 106 heroes and hundreds of hero skins. Today I'll teach you to climb down hundreds of skins.
catalogue
Python Basics
Python built-in function zip
Python ...
Added by cuvaibhav on Fri, 03 Sep 2021 03:46:08 +0300