# -*- coding: utf-8 -*- """ Spyder Editor:贺倩倩 This is a temporary script file. """ import urllib import re import random #0打开文件,添加标题 csv_file = open(r'C:\Users\Administrator\Desktop\JY\iphoneX.csv','w') title = '网络类型,颜色,套餐类型,存储容量,购买渠道,评论,日期\n' csv_f ...
df=open('F:/top100.txt','w',encoding='utf-8') 先看下官方文档: Help on built-in function open in module io: open(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, closefd=True, opener=None) 在这里做个解释: python open()函数用于打开一个文件,创建一个file对象。 ...
这里有python教程: https://jingyan.baidu.com/season/34655?pn=0 compile函数: 通常我们会将字符串先编译成pattern实例,然后在进行匹配的操作,而创建pattern实例就是要用到compile函数。 Help on function compile in module re: compile(pattern, flags=0) Compile a regular expression patt ...
import re a = re.search(r'fish(C|D)','fishC') b = re.search(r'fish(C|D)','fishD') c = re.search(r'fish(C|D)','fishE') print('a:',a) print('b:',b) print('c:',c) #^,中文名称脱字符,属于定位匹配,匹配输入字符串的开始位置,确定一个位置 e = re.search(r'^¥fishc','¥fishc.abc' ...