从文件中读取一篇英语文章，统计每个单词出现的频率，输出十个最长出现的单词及次数图像。
import turtlecount = 10xscale = 30yscale = 6data = []words = []def replacepunctuations(line):for ch in line:if ch in "~@#$%^&*()_-+=<>?/,.:;{}[]|\'""":line = line.replace(ch," ")return linedef processline(line,wordcounts):line = replacepunctuations(line)words = line.split()for word in words:if word in wordcounts:wordcounts[word] += 1else:wordcounts[word] = 1def line(t,x1,y1,x2,y2): #作x,y轴t.penup()t.goto(x1,y1)t.pendown()t.goto(x2,y2)def drawtext(t,x,y,text): #写出每个坐标对应的单词和柱体表示的数量t.penup()t.goto(x,y)t.pendown()t.write(text)def drawline(t,x1,y1,x2,y2):t.penup()t.goto(x1,y1)t.pendown()t.goto(x2,y2)def drawrectangle(t,x,y):#作长方形x = x*xscaley = y*yscaledrawline(t,x-5,0,x-5,y)drawline(t,x-5,y,x+5,y)drawline(t,x+5,y,x+5,0)drawline(t,x+5,0,x-5,0)def drawbar(t):#作单词对应的图形for i in range(count):drawrectangle(t,i+1,data[i])def drawgraph(t): #作图表drawline(t,0,0,360,0)drawline(t,0,300,0,0)for x in range(count):x += 1drawtext(t,x*xscale-5,-20,(words[x-1]))drawtext(t,x*xscale-5,data[x-1]*yscale+10,data[x-1])drawbar(t)def main():filename = input("enter a filename:").strip()infile = open(filename,"r")wordcounts = {}for line in infile:processline(line.lower(),wordcounts) #lower()把大写字母改成小写pairs = list(wordcounts.items())items = [[x,y] for (y,x) in pairs]items.sort()for i in range(len(items)-1,len(items)-count-1,-1):print(items[i][1]+"\t"+str(items[i][0]))data.append(items[i][0])words.append(items[i][1])infile.close()turtle.title('词频结果柱状图')turtle.setup(900,750,0,0)t = turtle.Turtle()t.width(3)drawgraph(t)main()
