Python: simple drawings

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Python: simple drawings

import cv2; # OpenCV Python import numbers; import numpy as np; import math; import matplotlib; import matplotlib.pyplot as plt; import matplotlib.image as mpimg; from IPython.display import display, Image img = cv2.imread('9012.JPG'); img=np.zeros((…

python simple factory mode example

Two python simple factory mode examples shown in this section. One is for base operation and another is for json and xml file handling. 1. Base operation script shown as following: # -*- coding: utf-8 -*- """OperationFactory.py This is a si…

Python: simple code

# !/usr/bin/env python3.6 # -*- coding: utf-8 -*- # visual studio 2017 # 2019 10 12 Geovin Du print from turtle import *; import sys; from math import ceil; import re; import time; import operator; from copy import deepcopy; from random import randin…

[译]如何使用Python构建指数平滑模型:Simple Exponential Smoothing, Holt, and Holt-Winters

原文连接:How to Build Exponential Smoothing Models Using Python: Simple Exponential Smoothing, Holt, and- 今年前12个月,iPhone XS将售出多少部?在埃隆·马斯克(Elon musk)在直播节目中吸食大麻之后,特斯拉的需求趋势是什么?这个冬天会暖和吗?(我住在加拿大.)如果你对这些问题感到好奇,指数平滑法可以通过建立模型来预测未来. 指数平滑方法为过去的观测分配指数递减的权重.得到的观测值越近…

Data manipulation primitives in R and Python

Data manipulation primitives in R and Python Both R and Python are incredibly good tools to manipulate your data and their integration is becoming increasingly important1. The latest tool for data manipulation in R is Dplyr2 whilst Python relies onPa…

[译]PyUnit—Python单元测试框架(1)

1. 原文及参考资料原文链接:http://docs.python.org/2/library/unittest.html# 参考文档: http://pyunit.sourceforge.net/pyunit_cn.html http://www.oschina.net/question/12_27127 2. PyUnit介绍 PyUnit是Python 2.1版本新增功能. (如果你已经熟悉了测试的基本概念,你可以直接跳到the list of assert methods.) Pyth…

实验一个最小的PYTHON服务器编程

没事,玩玩儿~~~:) 按书上的例子来作.. #!/usr/bin/env python #Simple Server - Chapter 1 -server.py import socket host = '' port = 51423 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((host, port))…