函数功能：统计文本中单词频率，并用柱状图显示前10个最高的单词
这里统计的是函数所在文件本身
import turtlecount = 10
data = []
words = []
# y
yScale = 6
# X
xScale = 30def drawLine(t, x1, y1, x2, y2):t.penup()t.goto(x1, y1)t.pendown()t.goto(x2, y2)def drawText(t, x, y, text):t.penup()t.goto(x, y)t.pendown()t.write(text)def drawRectangle(t, x, y):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):for i in range(count):drawRectangle(t, i+1, data[i])def drawGraph(t):drawLine(t, 0, 0, 360, 0)drawLine(t, 0, 300, 0, 0)for x in range(count):x=x+1drawText(t, x*xScale-4, -20, (words[x-1]))drawText(t, x*xScale-4, data[x-1]*yScale+10, data[x-1])drawBar(t)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 main():filename = "test1.py"infile = open(filename, "r")wordCounts = {}for line in infile:processLine(line.lower(), wordCounts)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])turtle.title("histogram")turtle.setup(900, 750, 0, 0)t = turtle.Turtle()t.hideturtle()t.width(3)drawGraph(t)if __name__ == "__main__":main()
