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   源码介绍

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使用python画条形统计图

import turtle
'''全局变量'''
amount = 10
words = []
wCounts = []
xPoint = -360
yPoint = -200
'''turtle start'''

def drawLine(t,x1,y1,x2,y2):
   t.penup()
   t.goto(x1,y1)
   t.pendown()
   t.goto(x2,y2)

def drawText(t,x,y,text,fontSize=10):
   t.penup()
   t.goto(x,y)
   t.pendown()
   t.write(text,font=('微软雅黑',fontSize,),align='center')

def drawRectangle(t,x,y,rWidth):
   drawLine(t,x-rWidth,yPoint,x-rWidth,y)
   drawLine(t,x-rWidth,y,x rWidth,y)
   drawLine(t,x rWidth,y,x rWidth,yPoint)
   drawLine(t,x rWidth,yPoint,x-rWidth,yPoint)

def drawBarchart(t):
   drawText(t,0,-yPoint-40,"词频统计结果",15)
   drawRectangle(t,0,-yPoint,-xPoint)
   rWidth = -xPoint/(2*amount)
   xScale = -xPoint*2/(amount 1)
   yScale = -yPoint/wCounts[0]
   for i in range(amount):
      i=i 1
      x=i*xScale xPoint
      y=wCounts[i-1]*yScale yPoint
      drawText(t,x,yPoint-20,words[i-1])
      drawText(t,x,y 10,wCounts[i-1])
      t.begin_fill()
      drawRectangle(t,x,y,rWidth)
      t.end_fill()

def init():
   turtle.title('词频结果柱状图')
   turtle.screensize(900,750,"#272727")
   t=turtle.Turtle()
   t.hideturtle()
   t.width(1)
   t.color("#EBEBD0","#006030")

   drawBarchart(t)
   turtle.exitonclick()
'''data Processing'''

def processLine(line,wordamounts):
   line = replacePunctuations(line)
   words = line.split()
   for word in words:
      if word in wordamounts:
         wordamounts[word] = 1
      else:
         wordamounts[word] = 1
#空格替换标点
def replacePunctuations(line):
   for ch in line:
      if ch in "~!@#$%^&*()-_ =<>?/,.:;{}[]|\'\"":
         line = line.replace(ch,' ')
   return line

def dataProcess(filename):
   infile=open(filename,'r',encoding='UTF-8')
   wordamounts={}                         
   for line in infile:
      processLine(line.lower(),wordamounts)
   pairs = list(wordamounts.items())
   items = [[x,y]for (y,x) in pairs]
   items.sort()

   for i in range(len(items)-1,len(items)-amount-1,-1):
      print(items[i][1] "\t" str(items[i][0]))
      wCounts.append(items[i][0])
      words.append(items[i][1])
   infile.close()
def main():

   filename= input("enter a filename:").strip()
   dataProcess(filename)
   init()
if __name__ == '__main__':
   main()