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1,简明python一个实例不解

python官网上有哈 free!

简明python一个实例不解

2,python排序

python字典里根本就没顺序,即便你用键值大小排序,那你也把所有简直放到一个列表里比较下才能找到最值,最终还是在列表里完成的排序。

python排序

3,python的实例怎么理解

实例 :就好像是一辆某个品牌的车而这辆车是汽车生产工厂造出来的汽车生产厂就是类,类是一个模板,它可以造出各种各样的汽车,每种汽车都是一个对象实例

python的实例怎么理解

4,用python写一个程序

for gj in range(21): for mj in range(34): for xj in range(101): if (gj+mj+xj==100) and (gj*5+mj*3+xj/3==100): print(gj,mj,xj)

5,用python写一个程序

举个python的简单函数作为例子。代码如下:#!/usr/bin/python# -*- coding: UTF-8 -*-# 可写函数说明def changeme( mylist ): "修改传入的列表" mylist.append([1,2,3,4]); print "函数内取值: ", mylist return# 调用changeme函数mylist = [10,20,30];changeme( mylist );print "函数外取值: ", mylist

6,使用Python实现命令行闹钟脚本实例有哪些

import sys import string from time import sleep sa = sys.argv lsa = len(sys.argv) if lsa != 2: print "Usage: [ python ] alarm_clock.py duration_in_minutes" print "Example: [ python ] alarm_clock.py 10" print "Use a value of 0 minutes for testing the alarm immediately." print "Beeps a few times after the duration is over." print "Press Ctrl-C to terminate the alarm clock early." sys.exit(1) try: minutes = int(sa[1]) except ValueError: print "Invalid numeric value (%s) for minutes" % sa[1] print "Should be an integer >= 0" sys.exit(1) if minutes < 0: print "Invalid value for minutes, should be >= 0" sys.exit(1) seconds = minutes * 60 if minutes == 1: unit_word = " minute" else: unit_word = " minutes" try: if minutes > 0: print "Sleeping for " + str(minutes) + unit_word sleep(seconds) print "Wake up" for i in range(5): print chr(7), sleep(1) except KeyboardInterrupt: print "Interrupted by user" sys.exit(1)
虽然我很聪明,但这么说真的难到我了

文章TAG:python  实例  简明  一个  python实例  
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