Python基础综合练习
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# coding=utf-8 import turtle # 画五角星的方法 def drawPentagram(x): turtle.begin_fill() turtle.color(\'yellow\') for i in range(5): turtle.forward(x) turtle.right(144) turtle.end_fill() def gotoPoint(x,y,z): turtle.penup() turtle.setheading(0) turtle.goto(x,y) turtle.right(z) turtle.pendown() #length = 540 length = int(input(\'请输入国旗长度:\')) width=length/3*2 bigDiameter=width*0.3 smallDiameter=width*0.1 turtle.hideturtle() turtle.penup() turtle.goto(-length/2,width/2) turtle.pendown() turtle.color(\'red\') turtle.begin_fill() for i in range(2): turtle.forward(length) turtle.right(90) turtle.forward(width) turtle.right(90) turtle.end_fill() # 大的五角星 gotoPoint(-width*0.65, width*0.3, 0) drawPentagram(bigDiameter) # 第一个小五角星 gotoPoint(-width*0.3, width*9/20, 12) drawPentagram(smallDiameter) # 第二个小五角星 gotoPoint(-width*0.18,width*0.32, -18) drawPentagram(smallDiameter) # 第三个小五角星 gotoPoint(-width*0.18,width*0.19, 0) drawPentagram(smallDiameter) # 第四个小五角星 gotoPoint(-width*0.3, width*0.1, 12) drawPentagram(smallDiameter) turtle.done()
运行结果图:
字符串练习:
取得校园新闻的编号
url = \'http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html\' print(url[-14:-5])
运行结果图
产生python文档的网址
def generatePythonUrl(className): addr1 = \'https://docs.python.org/3/library/\' addr2 = \'.html\' return addr1 + className + addr2 print(generatePythonUrl(\'turtle\'))
运行结果图
产生校园新闻的一系列新闻页网址
for i in range(0,20): print(\'http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html\'.format(i))
运行结果图
练习字符串内建函数:strip,lstrip,rstrip,split,count,replace
用函数得到校园新闻编号
url = \'http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html\' print(url.rstrip(\'.html\').split(\'_\')[1])
运行结果
用函数统计一歌词(文章、小说)中单词出现的次数,替换标点符号为空格,用空格进行分词。
lyric = \'\'\' Waking up I see that everything is ok The first time in my life and now it\'s so great Slowing down I look around and I am so amazed I think about the little things that make life great I wouldn\'t change a thing about it This is the best feeling This innocence is brilliant, I hope that it will stay This moment is perfect, please don\'t go away, I need you now And I\'ll hold on to it, don\'t you let it pass you by I found a place so safe, not a single tear The first time in my life and now it\'s so clear Feel calm I belong, I\'m so happy here It\'s so strong and now I let myself be sincere I wouldn\'t change a thing about it This is the best feeling This innocence is brilliant, I hope that it will stay This moment is perfect, please don\'t go away, I need you now And I\'ll hold on to it, don\'t you let it pass you by It\'s the state of bliss you think you\'re dreaming It\'s the happiness inside that you\'re feeling It\'s so beautiful it makes you wanna cry It\'s the state of bliss you think you\'re dreaming It\'s the happiness inside that you\'re feeling It\'s so beautiful it makes you wanna cry It\'s so beautiful it makes you want to cry This innocence is brilliant, it makes you want to cry This innocence is brilliance, please don\'t go away Cause I need you now And I\'ll hold on to it, don\'t you let it pass you by This innocence is brilliant, I hope that it will stay This moment is perfect, please don\'t go away, I need you now And I\'ll hold on to it, don\'t you let it pass you by \'\'\' result = lyric.replace(\',\', \' \').lower().lstrip().rstrip() tempwords = result.split() words = list(set(tempwords)) print(words) print(result) for i in range(0,len(words)): print(\'单词 \'+ words[i] + \' 的出现次数为:\'+str(result.count(str(words[i]))))
运行结果图
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