Is Python an ordered set?

Python has a An orderly dictionary . How about an orderly set? #1 building For many purposes, just calling sorted is enough. for example >>> s = set([0, 1, 2, 99, 4, 40, 3, 20, 24, 100, 60]) >>> sorted(s) [0, 1, 2, 3, 4, 20, 24, 40, 60, 99, 100] If you want to reuse this feature, calling the sorted function incur ...

Posted by ctoshack on Wed, 29 Jan 2020 22:53:59 -0800

Introduction to deep learning

  Catalog Parameter update 1sgd (random gradient descent) method 1.1SGD drawback 2Momentum method 3AdaGrad method 4Adam method 5 cases 5.1 common folder 5.1.1,common/functions.py 5.1.2,common/gradient.py 5.1.3,common/layers.py 5.1.4,common/util.py 5.1.5,common/optimizer.py 5.1.6,common ...

Posted by tippy_102 on Wed, 29 Jan 2020 20:39:40 -0800

Detectron 2 (target detection framework) - 07: source details - model building - retinaet as an example

The following links are personal opinions on detectron 2 (target detection framework). If there is any error, please point out it. I will correct it as soon as possible. Interested friends can add wechat: a944284742 to discuss technology with each other. If it helps you anything, remember to like it! Be ...

Posted by HA7E on Tue, 28 Jan 2020 05:20:32 -0800

Kotlin series - progress bar with arc

This article has authorized WeChat public number Guo Lin (guolin_blog) to reprint. This is a progress bar with an arc. In fact, this control has been implemented for a long time, but I want to rewrite and optimize it with Kotlin and explain it. Project GitHub: CircularArcProgressView Design sketch ...

Posted by bapi on Tue, 28 Jan 2020 01:19:39 -0800

Python common built-in functions

Built in function table abs() all() any() ascii() bin() bool() bytes() callable() compile() complex() chr() delattr() dir() divmod() enumerate() eval() exec() exit() filter() float() frozenset() getattr() globals() hasattr() hash() help() hex() id() input() int() isinstance() iter() le ...

Posted by 448191 on Tue, 21 Jan 2020 09:19:14 -0800

[python automatic office] insert pictures, generate histogram, line chart and pie chart into Excel file

Insert picture openpyxl.drawing.image/sheet.add_image() import os os.chdir('D:\\python_major\\auto_office9') from openpyxl import load_workbook from openpyxl.drawing.image import Image workbook = load_workbook(filename = 'This is a form.xlsx') sheet = workbook.active photo = Image('1.jpg') photo.heig ...

Posted by phwae on Tue, 21 Jan 2020 05:19:44 -0800

How to redirect to 404 in Rails?

I want to "fake" 404 pages in Rails. In PHP, I only send headers with error codes as follows: header("HTTP/1.0 404 Not Found"); How does Rails do this? #1 building The selected answer does not work in Rails 3.1 + because the error handler has been moved to middleware (see github issue ). This is a solution that I am ve ...

Posted by woobarb on Mon, 20 Jan 2020 06:07:27 -0800

Machine learning Bayes task05

Bayesian Theory: Bayesian python implementation: from sklearn.naive_bayes import GaussianNB from sklearn.datasets import load_iris import pandas as pd import numpy as np from sklearn.model_selection import train_test_split iris = load_iris() X_train, X_test, y_train, y_test = train_test_split(iri ...

Posted by username123 on Mon, 20 Jan 2020 05:38:38 -0800

How to replace nan in dataframe?

In data cleaning and other work, the essential link is missing value processing. When using pandas to read or process data, the missing value of dataframe is filled with nan by default. But in most cases, we need None or Null instead of nan. So, how to replace nan in dataframe? There are many ways t ...

Posted by JessePHP on Mon, 20 Jan 2020 03:33:10 -0800

tensorflow2.0 series: Eagle execution and Auto Graph

Catalog Disadvantages of static graph Eager mode Basic features of Eagle execution Support for numpy Auto Graph - dynamic graph static analysis VS dynamic flow Visible domain of local parameter The use of python collections data in tensorflow control flow Dimension and data type of sensor in ten ...

Posted by shadypalm88 on Sun, 19 Jan 2020 03:18:26 -0800