Programmer Group

1. String 1.1 string basis         In Python, a string is a combination of a string of characters. It is an immutable and finite sequence of characters, including visible characters, invisible characters (such as space characters) and escape characters. Python provides a large number of methods to manipulate strings throug ...

1. Preface Hello, I'm test Jun! Recently, a small partner left a message to me in the background, saying that he wrote an Api interface for uploading large files with Django. Now he wants to test the stability of interface concurrency locally and ask me if I have a good scheme This article takes file upload as an example to talk about the ...

cause Let's talk about what I'm doing. Before, a friend, their network security teacher, put forward a challenge, that is, if he can get the test paper on his computer when handing in his homework, the test will be full marks directly. The teacher has shown the location of the test paper and his computer system. So let's try. First, my idea i ...

Circular traversal of dictionary key traversing dictionary dict = {"k1": "v1", "k2": "v2", "k3": "v3"} keys = dict.keys() print(keys) for key in keys: print(key) Note: key refers to the key of the dictionary, for example: 'k1', 'k2', 'k3' Traverse the value of the dictionary dict = {"k1": "v1", "k2": "v2", "k3": "v3"} values = dic ...

This blog will introduce how to use template matching to find objects in images. Template matching is a method to find the position of template image in a large image. OpenCV uses cv2.matchTemplate() and cv2.minMaxLoc() to realize template matching. It is mainly divided into three parts: Template matching single objectTemplate matching mu ...

problem See a sentence: NMS doesn't understand, what else to do Detection! Tiger's body is shocked... Understand is probably understand, but can the code be written??? In the target detection network, after the proposal is generated, the classification branch is used to give the confidence of each type of each box, and the regression branch i ...

Basic grammar ·Single line note Start with # example: #Output Picchu print ("Pikachu") ·Multiline comment Start with three quotation marks and end with three quotation marks """ """ example """ output """ ·Identifiers and keywords Identifier: alphanumeric and underscore. It can only start with a let ...

     When learning machine learning, many students start programming directly after a rough look at the theory, which is very commendable. However, it's not really a handwriting algorithm, but to directly call a package such as sklearn, which is not appropriate. The author is not saying that the package transfer is bad. In p ...

1. Overview of Functions If you need a block of code several times when developing a program, in order to improve writing efficiency and code reuse, you organize code blocks with independent functions into a small module, which is a function. We've been exposed to a number of functions, such as input(), print(), range(), len(), and so on, ...

Pytorch machine learning (VIII) -- NMS non maximum suppression and DIOU-NMS improvement in yoov5 catalogue Pytorch machine learning (VIII) -- NMS non maximum suppression and DIOU-NMS improvement in yoov5 preface 1, NMS non maximum suppression algorithm 2, Hard NMS non maximum code 3, DIOU-NMS   4, Soft NMS preface ...