Tag：python
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Time：2020-11-21
1. Python installation 1. Create a folder, mkdir python Enter the folder and unzip it tar zxvf Python-3.6.5.tar Enter the python-3.6.5 folder and enter: ./configure Then there are a lot of processes, and finally you are prompted to run a command. Just follow the prompts. Enter the make command (if the prompt does not exist, […]
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Time：2020-11-21
In the process of using deep learning model training, the preparation of tools is also a good start. It’s hard to finish at the beginning. Sharpening the knife doesn’t miss the firewood cutting. If we can solve the problems in the early stage, we can save a lot of energy for the later stage. Take […]
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Time：2020-11-16
This paper describes the principle and implementation of Python linear model training through tensorflow. For your reference, the details are as follows: 1. Related concepts For example, we should abstract the distribution law of y = KX + B from the way of a linear distribution featuresIs the input variable, that is, in simple linear […]
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Time：2020-11-13
This paper describes the python image processing operation based on tensor flow. For your reference, the details are as follows: In the deep learning of images, sometimes the number of pictures may be insufficient, or we hope that the network can learn more. At this time, we can process the existing image data to make […]
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Time：2020-11-12
Color target detection is to locate the target quickly according to the color of the object. Using CV2. Inrange function to set a suitable threshold, that is to select the appropriate target. Establish project colordetect.py The code is as follows: #! /usr/bin/env python # -*- coding: utf-8 -*- import numpy as np import cv2 def […]
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Time：2020-11-11
There are generally three methods to delete an element in a list in Python: remove, pop, and del 1. Remove: delete a single element, delete the first qualified element, and delete by value For example: >>> str=[1,2,3,4,5,2,6] >>> str.remove(2) >>> str [1, 3, 4, 5, 2, 6] 2. Pop: delete single or multiple elements, bit […]
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Time：2020-11-7
analysis In Python, strings are immutable. So you can’t directly delete specific characters between strings.Therefore, when you want to operate on the characters in the string, you need to convert the string into a list. The list is variable, so that you can operate on the specific characters in the string. 1. Delete specific characters […]
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Time：2020-11-6
When binding properties, if we directly assign properties to objects, for example: p = Person() p.name= ‘Mary’ Let’s first look at a detailed example (note that double underline name and age are defined as private variables) class Person(object): def __init__(self, name, age): self.__name = name self.__age = age def get_age_fun(self): return self.__age def set_age_fun(self, value): […]
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Time：2020-11-1
1. In the template, we often need to use some URLs to realize the jump between pages. For example, a tag needs to define the attribute of “a”. Of course, it is OK to fix the URL directly in the hardcoded way, but in this case, it may be troublesome to maintain the code in […]
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Time：2020-10-31
This article mainly introduces how Python uses redis to build distributed locks. This article introduces in detail the example code, which has a certain reference learning value for everyone’s study or work. Friends in need can refer to it In the actual application scenario, we may have multiple workers, which may be in one machine […]
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Time：2020-10-30
Pychar official download address: http://www.jetbrains.com/pycharm/download After entering the website, we will see the following interface: Professional means that the professional version pays, while community refers to the community version. Free cracking is, of course, a professional version. After downloading, open the installation package, click next, enter the figure below, and check all. Create desktop shortcut […]
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Time：2020-10-29
Turtle is one of the important standard libraries of python, which can do basic graphics drawing. The concept of vortex graphics drawing was born in 1969 and has been successfully applied in logo programming language. There is a basic framework for drawing graphics in the turtle Library: a little turtle crawls in the coordinate system, […]
