Try it Yourself » Example 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 Log inSign Up...
Replace first n occurrence of a character in a string To replace the first n occurrences of characters of a string with another character, we can specify the optional input argument in the replace() method. After specifying the number of occurrences of the characters to be replaced, n occurren...
The following code only replaces the first occurrence of the word "brown" with the word "blue": string_a = "The brown-eyed man drives a brown car." string_a = string_a.replace("brown", "blue", 1) print(string_a) And this prints: The blue-eyed man drives a brown car. By ...
string.replace(str1,str2,count) 目标字符串.relpace(需要被替换的字符串,用于替换的新子串,需替换多少处) count为空时替换所有被匹配的字符串。 >>> setup = "a duck goes into a bar..." >>> setup.replace("duck","duck2",1) 'a duck2 goes into a bar...' >>> setup.replace("duck","...
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.
string = 'Twelve:12 Eighty nine:89 Nine:9.' pattern = '\d+'# maxsplit = 1# split only at the first occurrence result = re.split(pattern, string, 1) print(result)# 输出: ['Twelve:', ' Eighty nine:89 Nine:9.'] 顺便说一下,maxsplit默认值为0;默认值为0。意味着拆分所有匹配的结果...
replace('Hello' , 'Hallo') # 'Hallo world' 更多字符串方法:字符串具有各种各样的方法用于测试和处理文本数据。下面是字符串方法的一小部分示例:s.endswith(suffix) # Check if string ends with suffix s.find(t) # First occurrence of t in s s.index(t) # First occurrence of t in s s....
Find a Character in a String in Python Tofind the index of a character in a string, we can use thefind()method. Thefind()method, when invoked on a string, takes the character as its input argument and returns the index of first occurrence of the character as shown below. ...
replace('Hello' , 'Hallo') # 'Hallo world' 更多字符串方法: 字符串具有各种各样的方法用于测试和处理文本数据。 下面是字符串方法的一小部分示例: s.endswith(suffix) # Check if string ends with suffix s.find(t) # First occurrence of t in s s.index(t) # First occurrence of t in s s...
Split the string at the first occurrence of sep, and return a 3-tuple containing the part before the separator, the separator itself, and the part after the separator. If the separator is not found, return a 3-tuple containing the string itself, followed by two empty strings. ...