Advanced function -- yield keyword and generator

Export: comparison between iterative values and index values Iterative values provide a new way that does not depend on index values. Iteration value: It does not depend on the index value and can be accessed by calling__ next__ () method value.Values cannot be repeated. You can only take values one by one from left to right. To get t ...

Added by limitedreality on Thu, 13 Jan 2022 16:00:57 +0200

Python allocation function and memory address

Hello, everyone. How are you doing? I'll show you how we can Python Assign functions to variables. I'll show you how to assign functions to variables. Now suppose we have a named hello function , all we have to do is print the word hello. You know that to call this function, you will type the name of the function, followed by a ...

Added by benz862 on Thu, 13 Jan 2022 15:43:25 +0200

Python learning --- syntax part (conditional statement (if), circular statement (while, for, continue, break, pass))

1. Conditional statements Python conditional statements are code blocks that determine the execution result (True or False) of one or more statements. The following figure summarizes the execution process of conditional statements: Conditional judgment in Python is mainly realized through if statements. color="red" if (color=="green"): ...

Added by p-co on Thu, 13 Jan 2022 15:13:30 +0200

Save time and effort. This is probably the fastest way to write GUI in Python

GUI instance The address of PySimpleGUI on GitHub is: <span style="color:#444444"><span style="background-color:#f6f6f6"><span style="color:#333333"><strong>https</strong></span>:<span style="color:#888888">//github.com/PySimpleGUI/PySimpleGUI</span> </span></span> You can visit it. ...

Added by podarum on Thu, 13 Jan 2022 15:09:49 +0200

I used Python to analyze a wave of hot new year goods. It turns out that everyone is buying these things?

I don't know how many little friends stay in place for the new year this year. Although I can't go back to my hometown this year, I have to buy new year goods and give gifts to my family and elders. So out of curiosity, I used the crawler to obtain the data of a treasure, and combined with Python data analysis and third-party visualization plat ...

Added by eojlin on Thu, 13 Jan 2022 14:27:55 +0200

I used Python to analyze a wave of hot new year goods. It turns out that everyone is buying these things?

I don't know how many little friends stay in place for the new year this year. Although I can't go back to my hometown this year, I have to buy new year goods and give gifts to my family and elders. So out of curiosity, I used the crawler to obtain the data of a treasure, and combined with Python data analysis and third-party visualization plat ...

Added by RockRunner on Thu, 13 Jan 2022 14:05:04 +0200

Goodbye if... elif... Easy to take down with Python decorator

Hello, everyone. Today, I read the code of EdgeDB[1] in Github and found that it is dealing with a large number of if elif... Else, skillfully used the decorator. The method is exquisite. Let's share it with you. Let's see what this method looks like. Suppose we want to make a function to judge the discount that a user can get according to his ...

Added by nev25 on Thu, 13 Jan 2022 09:50:32 +0200

Will Python script be invoked in Spark Scala/Java application?

Abstract: This article will introduce how to call Python script in Spark scala program, and the procedure of calling Spark java program is basically the same. This article is shared from Huawei cloud community< [Spark] how to invoke Python script in Spark Scala/Java application >, author: little rabbit 615. 1.PythonRunner For programs run ...

Added by MrRosary on Thu, 13 Jan 2022 09:18:20 +0200

Handwritten derivation of linear regression (gradient descent method, normal equation method)

This paper mainly starts with the mathematical principle, and discusses how to make the computer learn the linear regression equation through the known data. Before we go into detail, let's take a look at an example. This is a statistical table about the amount of bank loans. It can be seen that in this example, the bank loan amount is relat ...

Added by hack4lk on Thu, 13 Jan 2022 05:42:20 +0200

[algorithm] 2103 Ring and rod (Java / C / C + + / Python / go / trust)

1281. Difference between bit product sum of integers: There are n rings in total, and the color of the ring can be one of red, green and blue. These rings are distributed on 10 rods numbered 0 to 9. Give you a string rings with a length of 2n to represent the distribution of these n rings on the rod. Every two characters in rings form a ...

Added by geo3d on Thu, 13 Jan 2022 05:32:22 +0200