replace("w3cschool.cc", "runoob.com")) str = "this is string example...wow!!!" print (str.replace("is", "was", 3))以上实例输出结果如下:菜鸟教程旧地址: www.w3cschool.cc 菜鸟教程新地址: www.runoob.com thwas was string example...wow!!!Python...
print('abcdabc'.replace('abc','ABC'))# 一键替换,很厉害 1. ABCdABC 1. a1='aaa'.replace('x','xxx')# 没有找到,old, 则返回原字符串,注意,此时没有返回 新对象哦 print(id(a1)) 1. 2. 114211397336 1. a2='aaa' print(id(a2)) 1. 2. 114211397336 1. 字符串对象的maketrans()方法用来...
使用replace替换数字 要使用replace方法替换字符串中的所有数字,首先需要判断字符串中是否包含数字。可以使用Python的isdigit方法来判断一个字符串是否只包含数字。具体代码如下所示: defreplace_numbers(string,replacement):new_string=""forcharinstring:ifchar.isdigit():new_string+=replacementelse:new_string+=charret...
Or if I wanted to access say the first or the last element of that string,I can use my common generic sequence operations. 我也会做切片。 I can also do slicing. 所以我可能想从字符串的最开始开始,取前三个对象。 So I might want to start from the very beginning of the string and take...
字符串的声明 字符串切片 字符串大小写格式化str.upper() 字符串查找功能str.find 字符串右侧查找功能 字符串替换功能str.replace() 字符串编码str.encode 字符串的内建函数 id()辨识对象的唯一id属性功能 字符串可以重新赋值,但是字符串属于不可变对象 删除列表中的指定元素 append用于列表末尾的元素追加 ...
str.replace(old,new[,count]) #所有old子串被替换成new子串,count指替换次数,[]为可选 >>> str = "Winter Is Coming!" >>> str = str.replace(" ","--",2) #所有空格被替换成“--”,替换次数2 'Winter--Is--Coming!' >>> print(str) Winter--Is--Coming! 注意,如果使用for循环进行多个字...
>>> str.replace('n','N') 'striNg lEARN' >>> str.replace('n','N',1) 'striNg lEARn' >>> str.strip('n') #删除字符串首尾匹配的字符,通常用于默认删除回车符 'string lEAR' >>> str.lstrip('n') #左匹配 'string lEARn' >>> str.rstrip('n') #右匹配 'string lEAR' >>...
Python中的string.replace()简单使用 1importsys2man = input("请输入男主名字:")3women = input("请输入女主名字")4dog = input("请输入狗狗名字")56story ="""7在B城的某间屋内, man 把弹夹里的最后一枚子弹卸下填进口袋,瞟一眼坐在一旁的women漫不经心的说道:“你知道的,这种事我从不放在8眼里...
Replace the two first occurrence of the word "one": txt ="one one was a race horse, two two was one too." x =txt.replace("one","three",2) print(x) Try it Yourself » ❮ String Methods Track your progress - it's free!
In this tutorial, you'll learn how to remove or replace a string or substring. You'll go from the basic string method .replace() all the way up to a multi-layer regex pattern using the sub() function from Python's re module.