If you are looking for a tutorial topic in Python, I suggest the topic Remove the last character from a String in Python. If you want to remove the last character from a String, you can use functions like str.rsplit(), replace() function, or string to list conversion to use delete functions on the list. Post details below.
Remove the last character from a String in Python.
Use the str.rstrip() function.
Syntax:
string.rsplit(separator, maxsplit)
Parameters:
- separator – Optional. By default, any space is a separator. When specifying a separator, perform a split based on that character.
- maxsplit – Optional. The default value is -1. Specify the maximum number of times to perform the split.
The rsplit() function returns a list of strings after splitting them based on the given delimiters in right-to-left order. It is similar to the split() method we are familiar with but different in the order of elements in the result.
Example:
testStr = 'This is a tutorial article in Python!' print(testStr) # Use the rstrip() function to remove the last element of the string. newStr = testStr.rstrip(testStr[-1]) print(newStr)
Output:
This is a tutorial article in Python!
This is a tutorial article in PythonAn index of -1 means that a delete is performed from the end of the string. As you can see, the character ‘!’ has been removed from the original string.
Convert to a list to use delete functions on it.
You can convert strings to a list using the compatible delete functions on the list to remove the last element of the list and then convert them back to a string using the join() function. Here are some methods:
- list. pop( index ): Specify the element’s index to be removed as a parameter. The pop() function will remove that element from the list.
- del list [ index ]: The del command helps us to delete elements in a specified range in the list. You can use the del list [ start: end] syntax to remove multiple elements in the specified range.
Example:
- Initialize a string and convert it to a list using the list() function.
- Use functions to remove elements.
- Use the join() function, which returns the string.
testStr = 'This is a tutorial article in Python!' print(testStr) # Use the list() function to convert string to list. myList = list(testStr) # Remove the last element of the list by the del keyword. del myList[-1] strAgain = ''.join(myList) print(strAgain)
Output:
This is a tutorial article in Python!
This is a tutorial article in PythonOr you can use the pop() function.
Example:
testStr = 'This is a tutorial article in Python!' print(testStr) # Use the list() function to convert string to list. myList = list(testStr) # Remove the last element of the list by the pop() method. myList.pop(-1) strAgain = ''.join(myList) print(strAgain)
Output:
This is a tutorial article in Python!
This is a tutorial article in PythonNote: To remove the last element, the index is -1.
Use the replace() function.
Syntax:
str.replace(old, new, count)
Parameters:
- old: Original string.
- new: String will replace the original string.
- count: Specify the maximum number of character substitutions.
The replace() function will return a string that is a copy of the original string when the new substring has been replaced with the old substring.
Example:
- The function replace() with the old parameter is the character ‘!’, the new parameter is a space (adequate as to remove the last element), and the count parameter is -1 to indicate traversing from the end of the string.
testStr = 'This is a tutorial article in Python!'
print(testStr)
# Use the replace() function to remove the last element of the string.
newStr = testStr.replace('!', '', -1)
print(newStr)Output:
This is a tutorial article in Python!
This is a tutorial article in PythonSummary:
Hopefully, the article has given you ideas to implement the topic remove the last character from a String in Python. It would be best to use the replace() function because it is more optimal. Thank you for taking the time to read my post.
My name is Jason Wilson, you can call me Jason. My major is information technology, and I am proficient in C++, Python, and Java. I hope my writings are useful to you while you study programming languages.
Name of the university: HHAU
Major: IT
Programming Languages: C++, Python, Java