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python3生成随机数实例

yipeiwu_com6年前 (2020-03-06)Python基础

本文实例讲述了python3生成随机数的方法。分享给大家供大家参考。具体实现方法如下：

该实例是根据一本书上看到过一个随机数的小程序，经过自己改动，变为了一个猜数字的小游戏，现在在python3下重写了一遍。

这是一个控制台下的猜数程序，winxp+python3.2+eric5和IDLE测试通过，但直接用winxp的命令行运行有问题，原因还未知，慢慢找。ubuntu+python3.1测试通过。

具体实现代码如下：

# -*- coding: utf-8 -*-

import Image,ImageDraw,ImageFont

import random

import math, string  

class RandomChar():

  """用于随机生成汉字"""

  @staticmethod

  def Unicode():

    val = random.randint(0x4E00, 0x9FBF)

    return unichr(val)  

  @staticmethod

  def GB2312():

    head = random.randint(0xB0, 0xCF)

    body = random.randint(0xA, 0xF)

    tail = random.randint(0, 0xF)

    val = ( head << 8 ) | (body << 4) | tail

    str = "%x" % val

    return str.decode('hex').decode('gb2312')  

class ImageChar():

  def __init__(self, fontColor = (0, 0, 0),

                     size = (100, 40),

                     fontPath = 'wqy.ttc',

                     bgColor = (255, 255, 255),

                     fontSize = 20):

    self.size = size

    self.fontPath = fontPath

    self.bgColor = bgColor

    self.fontSize = fontSize

    self.fontColor = fontColor

    self.font = ImageFont.truetype(self.fontPath, self.fontSize)

    self.image = Image.new('RGB', size, bgColor)  

  def rotate(self):

    self.image.rotate(random.randint(0, 30), expand=0)  

  def drawText(self, pos, txt, fill):

    draw = ImageDraw.Draw(self.image)

    draw.text(pos, txt, font=self.font, fill=fill)

    del draw  

  def randRGB(self):

    return (random.randint(0, 255),

           random.randint(0, 255),

           random.randint(0, 255))  

  def randPoint(self):

    (width, height) = self.size

    return (random.randint(0, width), random.randint(0, height))  

  def randLine(self, num):

    draw = ImageDraw.Draw(self.image)

    for i in range(0, num):

      draw.line([self.randPoint(), self.randPoint()], self.randRGB())

    del draw  

  def randChinese(self, num):

    gap = 5

    start = 0

    for i in range(0, num):

      char = RandomChar().GB2312()

      x = start + self.fontSize * i + random.randint(0, gap) + gap * i

      self.drawText((x, random.randint(-5, 5)), RandomChar().GB2312(), self.randRGB())

      self.rotate()

    self.randLine(18)  

  def save(self, path):

    self.image.save(path)