<?php //插入字符串 //1.双引号可以解析字符串中的变量:但是前后不能跟中文符号 $username = "gaoxiong"; echo "my name is $username";//my name is gaoxiong echo "<br>"; echo "my name is $username,";//my name is echo "<br>"; //2
今天本来打算写个程序,替换字符串中固定的一个字符:将<全部替换成回车'\n' 于是,我写成这样 s='sdjj<ddd<denj,>' for x in s: if x=='<': x='\n' print(s) 然后输出还是 'sdjj<ddd<denj,>' 然后我就很纳闷,于是乎我又写成了这样 s='sdjj<ddd<denj,>' ss=list(s) for x in ss: if x=='<': x='\n' print(
有时候,我们需要在字符串中加入相应的变量,以下提供了几种字符串加入变量的方法: 1.+ 连字符 name = 'zhangsan' print('my name is '+name) #结果为 my name is zhangsan 2.% 字符 name = 'zhangsan' age = 25 price = 4500.225 print('my name is %s'%(name)) print('i am %d'%(age)+' years old') print('my price
定义字符串的时候,用单引号或者双引号都是可以的.我个人习惯是用双引号.在输出字符串的时候,若字符串中含有字符串变量,使用单引号和双引号则是有区别的.如下面程序: <?php $website = "NowaMagic"; $name = 'Gonn'; echo 'Welcome to visit $website. My name is $name.'; echo '<br>'; echo "Welcome to visit $website. My na
# -*- coding:utf-8 -*- import sys,os txta = open('a.txt','r') str = '' for line in txta: str += line.strip().decode('utf-8') txta.close() for word in str: print word.encode('utf-8') 直接输出,是会乱码的,得先解码,再编码. 参考网址:http://blog.csdn.net/devil_2009/article/de
python中字符串可以(且仅可以)使用成对的单引号.双引号.三个双引号(文档字符串)包围: 'this is a book' "this is a book" """this is a book""" 可在单引号包围的字符串中包含双引号,三引号等,但不能包含单引号自身(需转义) 'this is a" book' 'this is a"" book' 'this is a""
1. 简单粗鲁的字符串拼接 1 name = "abc" 2 age = 25 3 info = "the name is "+name +"\nthe age is " + str(age) 4 print(info) 运行结果: 2.% name = "abc" age = 25 info = "the name is %s \nthe age is %s"%(name ,age) print(info