Solution to the problem of installing tkinter module in Mac

Article directory 0 in front 1 problem description 1 solution 1.1 first make sure to uninstall python3 1.2 then install xcode 1.3 replace ruby script 1.4 install python 1.5 test 0 in front Environmental Science: mac catalina 10.15.1 python 3.7.5 tkinter 8.6 1 problem description When you r ...

Posted on Mon, 24 Feb 2020 06:15:35 -0500 by Fabrizzio PHP

A cross period arbitrage strategy based on EG co integration in Python

Some background of Finance and Mathematics As we all know, the main premise of arbitrage transaction is the mean regression of the two prices with the same attributes, which is a kind of interest margin transaction to earn this mean regression. The classical regression model is based on the stationary data variables. For the non-stationary var ...

Posted on Mon, 24 Feb 2020 05:14:49 -0500 by mhsjrotc

Image segmentation based on moment pool cloud | neural network: a case of pneumothorax x X-ray recognition

In the last prediction of pneumonia X-ray, we use neural network to identify the chest X-ray of patients, which is used to detect whether patients have pneumonia. This is a typical application of neural network image classification in the field of medicine. In addition, image segmentation based on neural network is also very important in the fi ...

Posted on Mon, 24 Feb 2020 04:36:19 -0500 by Huijari

The second lecture of reptile core foundation (regular expression)

regular expression Introduction to regular expressions Regular expression is a kind of logical formula for string operation, that is to use some specific characters defined in advance and the combination of these specific characters to form a regular string. This string is used to express the logic ...

Posted on Mon, 24 Feb 2020 02:13:45 -0500 by Nate

The simulation login of python crawler project to Zhengfang educational administration system to obtain the scores (super detailed)

Recently, I stayed at home and had nothing to do. After studying pyhton reptile for several days, I had a preliminary understanding, so I planned to log in to Zhengfang educational administration system to get the result information, so that I could quickly check the result in the future. I was distress ...

Posted on Mon, 24 Feb 2020 01:01:26 -0500 by waradmin

Implement a simple user rights management (RBAC) using Python+Flask+Bootstrap (Part3)

Code structure and description I listed all the files in the first chapter, and I'll cover them in this chapter. root directory db_design.txt This is the sql script that initializes the database. There is a user.sqlite under the tool_portal directory, and this file is generated by this initializati ...

Posted on Sun, 23 Feb 2020 21:49:31 -0500 by mynameisbob

python multifile programming file invocation

python multifile programming file invocation The first thing you need to know is that when you execute Python code using the python command, the default way to execute code is by scripting. $ python main.py Hello World! In addition to running python code as a script, python code can be executed in another way: python -m main Hello World! Unli ...

Posted on Sun, 23 Feb 2020 19:59:22 -0500 by apollyon

Entry record of darknet [mysy2 environment + opencv compilation]

There is a lot of rubbish in the records, mainly including: Compiling darknet with mysy2 under Windows To solve the problem of compiling darknet with opencv: opencv4 latest version of Iplimage Simple error reporting represented by clock_lt timeval timesub no definition mysy2 link library dll ...

Posted on Sun, 23 Feb 2020 07:38:45 -0500 by kaimason1

The basic operation of Pandas in excel

0x01 background Recently, I helped someone to deal with financial related excel forms. By the way, I learned how to deal with Excel in panda, which is summarized as follows. I hope it can be used directly later. The biggest feeling is that python deals with Excel, which is a blow to reduce the dimension of Excel formula. 0x02 operation 2.1 ...

Posted on Sun, 23 Feb 2020 01:56:25 -0500 by Kookedoh

Getting started with Delta Lake with Jupiter Notebook

The example of this article comes from Delta Lake Official course . Because the official tutorial is based on the commercial software Databricks Community Edition. Although the software features used in the tutorial are all possessed by the open-source Delta Lake version, considering the domestic network environment, the threshold for register ...

Posted on Sun, 23 Feb 2020 00:35:26 -0500 by GroundZeroStudios