Show
Recent Posts
This article was published on September 15, 2016 Your Questions / CommentsIf you found this article interesting, found errors, or just want to discuss about it, please get in touch. Replace last occurrence of Substring in String in Python #To replace the last occurrence of a substring in a string:
The first step is to use the
The str.rsplit method returns a list of the words in the string using the provided separator as the delimiter string.
The method takes the following 2 arguments:
Except for splitting from the right, The last step is to use the
The str.join method takes an iterable as an argument and returns a string which is the concatenation of the strings in the iterable. The string the method is called on is used as the separator between the elements. If the substring is not found in the string, the string is returned as is.
Alternatively, you can use the Replace last occurrence of Substring in String using rfind() #To replace the last occurrence of a substring in a string:
We first check if the substring is not found in the string, in which case we return the string as is. We used the The str.rfind method returns the highest index in the string where the provided substring is found.
The method
returns The slice
We then use the addition (+) operator to append the replacement string. The slice If the substring is not contained in the string, we return the string as is.
Which approach you pick is a matter of personal preference. I'd go with using the How do I change the last occurance of a string in Python?Call str. rfind(char) to get the index of the last occurrence of char in str . Use the syntax str[:index] + "c" + str[index+1:] to replace the character located at index with "c" in str . last_char_index = original_string.
How do you replace the last occurrence of a character in a string?To replace the last occurrence of a character in a string:
Use the lastIndexOf() method to get the last index of the character. Call the substring() method twice, to get the parts of the string before and after the character to be replaced. Add the replacement character between the two calls to the substring method.
How do I remove the last occurrence of a character from a string in Python?rstrip. The string method rstrip removes the characters from the right side of the string that is given to it. So, we can use it to remove the last element of the string. We don't have to write more than a line of code to remove the last char from the string.
How do I change the last 4 characters of a string in Python?To replace the last N characters in a string using indexing, select all characters of string except the last n characters i.e. str[:-n]. Then add replacement substring after these selected characters and assign it back to the original variable.
|