2018年12月20日

摘要： ............................................ 50 .................................................................. ................................... 阅读全文

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摘要： import requests from bs4 import BeautifulSoup url = 'http://www.baidu.com' html = requests.get(url) sp = BeautifulSoup(html.text, 'html.parser') print(sp) html_doc = """ 页标题 文件标题 Once upon a t... 阅读全文

摘要： from urllib.parse import urlparse url = 'http://www.pm25x.com/city/beijing.htm' o = urlparse(url) print(o) print("scheme={}".format(o.scheme)) # http print("netloc={}".format(o.netloc)) # www.pm25... 阅读全文

摘要： import matplotlib.pyplot as plt decisionNode = dict(boxstyle="sawtooth", fc="0.8") leafNode = dict(boxstyle="round4", fc="0.8") arrow_args = dict(arrowstyle=" maxDepth: maxDepth = thisDepth retu... 阅读全文

摘要： import numpy as np import operator as op from math import log def createDataSet(): dataSet = [[1, 1, 'yes'], [1, 1, 'yes'], [1, 0, 'no'], [0, 1, 'no... 阅读全文