Planar data classification with one hidden layer 1 - Packages Let’s first import all the packages that you will need during this assignment.  - numpy is the fundamental package for scientific computing with Python.  - sklearn prov…

3 - General Architecture of the learning algorithm It’s time to design a simple algorithm to distinguish cat images from non-cat images. You will build a Logistic Regression, using a Neural Network mindset. The following Figure explains why Logistic Regre…

Part 1：Python Basics with Numpy (optional assignment) 1 - Building basic functions with numpy Numpy is the main package for scientific computing in Python. It is maintained by a large community (www.numpy.org). In this exercise you will learn several key numpy…

Built-in Functions abs() dict() help() min() setattr() all() dir() hex() next() slice() any() divmod() id() object() sorted() ascii() enumerate() input() oct() staticmethod() bin() eval() int() open() str() bool() exec() isinstance() ord() sum() bytearray() fi…

集合的作用： 去重，把一个列表变成集合，就自动去重了 关系测试，测试两组数据之前的交集、差集、并集等关系 s = set([3,5,9,10])      #创建一个数值集合  t = set("Hello")         #创建一个唯一字符的集合  a = t&n…

主程序： # -*- coding: utf-8 -*- """ Created on Sun Oct 22 19:57:24 2017 @author: dqhpl """ import json import pygal.maps.world from country_codes import …

high_low_mean.py # -*- coding: utf-8 -*- """ Created on Sun Oct 22 18:19:57 2017 @author: dqhpl """ import csv from matplotlib import pyplot as p…