python第一个爬虫。

Posted 2021-12-02 gsd-tt

1、测试羽毛球规则程序代码。

原代码如下：

from random import random

print("学号尾数08")

def printIntro():
    
    print("这个程序模拟两个选手A和B的羽毛球竞技比赛")
    print("程序运行需要A和B的能力值（以0到1之间的小数表示）")
def getInputs():
    a = eval(input("请输入选手A的能力值(0-1): "))
    b = eval(input("请输入选手B的能力值(0-1): "))
    n = eval(input("模拟比赛的场次: "))
    m = eval(input("模拟次数："))
    return a, b, n, m
def simNGames(n, probA, probB):
    winsA, winsB = 0, 0
    scoreA_ls=[]
    scoreB_ls=[]
    for i in range(n):
        scoreA, scoreB = simOneGame(probA, probB)
        scoreA_ls.append(scoreA)
        scoreB_ls.append(scoreB)
        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1
    return winsA, winsB,scoreA_ls,scoreB_ls
def gameOver(a,b):
    if(a>20 or b>20):
        if(abs(a-b)>=2 and a<=29 and b<=29):
            return True
        else:
            return a==30 or b==30
    else:
        return False
def simOneGame(probA, probB):
    scoreA, scoreB = 0, 0
    serving = "A"
    while not gameOver(scoreA, scoreB):
        if serving == "A":
            if random() < probA:
                scoreA += 1
            else:
                serving="B"
        else:
            if random() < probB:
                scoreB += 1
            else:
                serving="A"
    return scoreA, scoreB
def printSummary(winsA, winsB,m,scoreA_ls,scoreB_ls):
    n = winsA + winsB
    print("模型模拟次数{}".format(m))
    print("竞技分析开始，共模拟{}场比赛".format(n))
    print("A选手各场次得分比分:")
    print(scoreA_ls)
    print("B选手各场次得分比分:")
    print(scoreB_ls)
    print("选手A获胜{}场比赛，占比{:0.1%}".format(winsA, winsA/n))
    print("选手B获胜{}场比赛，占比{:0.1%}".format(winsB, winsB/n))
def main():
    printIntro()
    probA, probB, n, m= getInputs()
    for i in range(m):
        winsA, winsB,scoreA_ls,scoreB_ls = simNGames(n, probA, probB)
        printSummary(winsA, winsB,m,scoreA_ls,scoreB_ls)

main()

　　加了测试函数的代码如下：

from random import random

print("学号尾数08")

def printIntro():
    
    print("这个程序模拟两个选手A和B的羽毛球竞技比赛")
    print("程序运行需要A和B的能力值（以0到1之间的小数表示）")
try:
    printIntro(x)
except:
    print(‘printIntro error‘)
def getInputs():
    a = eval(input("请输入选手A的能力值(0-1): "))
    b = eval(input("请输入选手B的能力值(0-1): "))
    n = eval(input("模拟比赛的场次: "))
    m = eval(input("模拟次数："))
    return a, b, n, m
try:
    getInputs(x)
except:
    print(‘getInputs error‘)
def simNGames(n, probA, probB):
    winsA, winsB = 0, 0
    scoreA_ls=[]
    scoreB_ls=[]
    for i in range(n):
        scoreA, scoreB = simOneGame(probA, probB)
        scoreA_ls.append(scoreA)
        scoreB_ls.append(scoreB)
        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1
    return winsA, winsB,scoreA_ls,scoreB_ls
try:
    simNGames(1000,0.1)
except:
    print(‘simNgame error‘)
def gameOver(a,b):
    if(a>20 or b>20):
        if(abs(a-b)>=2 and a<=29 and b<=29):
            return True
        else:
            return a==30 or b==30
    else:
        return False
try:
    gameover(1,20)
except:
    print(‘gameOver error‘)
def simOneGame(probA, probB):
    scoreA, scoreB = 0, 0
    serving = "A"
    while not gameOver(scoreA, scoreB):
        if serving == "A":
            if random() < probA:
                scoreA += 1
            else:
                serving="B"
        else:
            if random() < probB:
                scoreB += 1
            else:
                serving="A"
    return scoreA, scoreB
try:
    simOneGame(0.1)
except:
    print(‘SimOneGame error‘)
def printSummary(winsA, winsB,m,scoreA_ls,scoreB_ls):
    n = winsA + winsB
    print("模型模拟次数{}".format(m))
    print("竞技分析开始，共模拟{}场比赛".format(n))
    print("A选手各场次得分比分:")
    print(scoreA_ls)
    print("B选手各场次得分比分:")
    print(scoreB_ls)
    print("选手A获胜{}场比赛，占比{:0.1%}".format(winsA, winsA/n))
    print("选手B获胜{}场比赛，占比{:0.1%}".format(winsB, winsB/n))
try:
    printSummary(500)
except:
    (‘printSummary error‘)
def main():
    printIntro()
    probA, probB, n, m= getInputs()
    for i in range(m):
        winsA, winsB,scoreA_ls,scoreB_ls = simNGames(n, probA, probB)
        printSummary(winsA, winsB,m,scoreA_ls,scoreB_ls)

main()

　　为了测试显得更有价值，所以将原代码中许多函数改成错误的。运行结果如下：

2、python连接360主页20次：

代码如下：

# -*- coding: utf-8 -*-
"""
Created on Wed May 22 21:59:28 2019

@author: 小米
"""

import requests
def gethtmlText(url):
    try:
        r=requests.get(url,timeout=30)
        r.raise_for_status()
        r.encoding=‘utf-8‘
        return r.text
    except:
        return "dddd"
url="https://hao.360.cn/"
print(getHTMLText(url))
     
for i in range(20):
   getHTMLText(url)
   print(i+1)

运行结果如下：