# python保留字符：这些保留字全部为小写字母：不能用作常数，变数，标识符名称and exec notassert finally orbreak for passclass from printcontinue global raisedef if returndel import tryelif in whileelse is withexcept lambda yield单行注释用 # 符号多行注释： 首行 '''  结束行  ''' 

vi 1.py  # 编辑第一个.py脚本#!/usr/bin/python # coding=utf-8 # -*- coding: UTF-8 -*-print("您好，欢迎来到小绿叶技术博客.py脚本研发项目部。初级学习结束，第二部分是了解的部分")# 第二部分开始beilv = 2figure = """             ____       

import osimport sys#引入模块if len (sys.argv) < 2:#判断参数是否小余2    filepath="."eles:    filepath=sys.argv[1]#将argv赋值给变量for root,dirs,files in files in os.walk(filepash):#使用os.walk遍历文件目录    for filename in files:    &nbs

pip install request#安装包----------------------from urllib import request#引入模块url = "http://www.163.com"#抓取的网页地址wp = request.urlopen(url)#打开链接content = wp.read()#获取页面内容fp = open("d:/www.txt","w+b")#open打开文件用的是‘W+B’以二进制方式打开fp.write(content)#写入数据fp.close()#关闭

C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\Scripts#打开python文件目录，复制路径到，计算机属性环境变量path里面粘贴进去打开cmdpip install pymysql#安装mysql-----------------------------------------------------------------------------import pymysql#引入模块conn = pymysql.c

import ospath = input("请输入文件路径（结尾加上/）:")f= os.listdir(path)n =0for i in f:    oldname=path+f[n]    newname=path+"888"+str(n+1)+'.jpg'    os.rename(oldname,newname)    print(oldname,"=======>",newname)   

while True:    x = input('please input:')    try:        x = int(x)        print('you have input {0}'.format(x))        break    except Exception as e: