Python string split last

How to Split the Last Element of a String in Python

In Python, splitting a string is a common task when working with text data. However, there might be cases when you only want to split the last element of a string. In this tutorial, we will cover how to split the last element of a string in Python using four different methods.

There are different ways we can split the last element of a string in Python like:

• Using split() method
• Using split() and slice method
• Using regular expressions
• Using rpartition()

How to Split the Last Element of a String in Python

Now, let us explore the different methods to split the last element of a string in Python.

Method-1: Split the Last Element of a String in Python using split()

The Python rsplit() function is similar to the split() function, but it starts splitting the string from the right. By specifying the maxsplit parameter, you can limit the number of splits.

text = "Hello, how are you? I hope you are doing well." delimiter = " " # Split the last element using rsplit() last_element = text.rsplit(delimiter, 1)[-1] print(last_element)

Method-2: Split the Last Element of a String in Python using split() and slice

You can use the Python split() function and then get the last element of the resulting list by slicing it.

text = "Splitting the last element can be done in multiple ways." delimiter = " " # Split the text and get the last element using slicing last_element = text.split(delimiter)[-1] print(last_element)

Method-3: Split the Last Element of a String in Python using regular expressions

The re module in Python provides the ability to work with regular expressions. You can use the re.split() function to split the last element of a string using a custom pattern.

import re text = "Sometimes, you might need to split the last element based on a specific pattern." pattern = r"\s" # Split on whitespace # Split the text using regular expressions and get the last element last_element = re.split(pattern, text)[-1] print(last_element)

Method-4: Split the Last Element of a String in Python using rpartition()

The str.rpartition( ) Python method is a built-in method that searches for the last occurrence of a specified delimiter and returns a tuple containing the part before the delimiter, the delimiter itself, and the part after the delimiter. If the delimiter is not found, it returns a tuple containing two empty strings and the original string.

text = "This is another way to split the last element of a string." delimiter = " " # Split the last element using rpartition() _, _, last_element = text.rpartition(delimiter) print(last_element)

In this example, we used the Python str.rpartition() to find the last occurrence of the specified delimiter in the string and extract the last element directly. This approach is useful when you know the delimiter and just need to extract the last element without splitting the entire string into a list.

Conclusion

In this tutorial, we covered three different methods to split the last element of a string in Python. You can choose the most suitable method depending on your specific requirements and the complexity of your text data.

You may like the following Python string tutorials:

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Python string split last

Last updated: Feb 19, 2023
Reading time · 4 min

# Table of Contents

# Split a string and get the First element in Python

To split a string and get the first element:

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my_str = 'bobby_hadz_com' first = my_str.split('_', 1)[0] print(first) # 👉️ 'bobby' 

The str.split() method splits the string into a list of substrings using a delimiter.

The method takes the following 2 parameters:

Name	Description
separator	Split the string into substrings on each occurrence of the separator
maxsplit	At most maxsplit splits are done (optional)

When the maxsplit argument is set to 1 , at most 1 split is done.

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my_str = 'a_b_c_d' # 👇️ ['a', 'b_c_d'] print(my_str.split('_', 1)) 

Python indexes are zero-based, so the first character in a string has an index of 0 , and the last character has an index of -1 or len(a_string) — 1 .

If the separator is not found in the string, a list containing only 1 element is returned.

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my_str = 'abcd' first = my_str.split('_', 1)[0] print(first) # 👉️ 'abcd' 

# Removing the leading and trailing separator before splitting

If your string starts with the specific separator, you might get a confusing result.

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my_str = '_a_b_c_d_' # 👇️ ['', 'a_b_c_d_'] print(my_str.split('_', 1)) first = my_str.split('_', 1)[0] print(repr(first)) # 👉️ "" 

You can use the str.strip() method to remove the leading or trailing separator.

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my_str = '_a_b_c_d_' # 👇️ ['a', 'b_c_d'] print(my_str.strip('_').split('_', 1)) first = my_str.strip('_').split('_', 1)[0] print(first) # 👉️ "a" 

We used the str.strip() method to remove any leading or trailing underscores from the string before calling the split() method.

# Split a string and get the Last element in Python

To split a string and get the last element:

1. Use the str.rsplit() method to split the string from the right.
2. Set the maxsplit argument to 1.
3. Access the list element at index -1 .

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my_str = 'bobby,hadz,com' last = my_str.rsplit(',', 1)[-1] print(last) # 👉️ 'com' 

We used the rsplit() method to split the string from the right.

The str.rsplit method returns a list of the words in the string using the provided separator as the delimiter string.

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my_str = 'bobby hadz com' print(my_str.rsplit(' ')) # 👉️ ['bobby', 'hadz', 'com'] print(my_str.rsplit(' ', 1)) # 👉️ ['bobby hadz', 'com'] 

The method takes the following 2 arguments:

Name	Description
separator	Split the string into substrings on each occurrence of the separator
maxsplit	At most maxsplit splits are done, the rightmost ones (optional)

Except for splitting from the right, rsplit() behaves like split() .

When the maxsplit argument is set to 1 , at most 1 split is done.

The last step is to access the last element in the list by accessing the list item at index -1 .

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my_str = 'bobby,hadz,com,abc' last = my_str.rsplit(',', 1)[-1] print(last) # 👉️ 'abc' 

Python indexes are zero-based, so the first character in a string has an index of 0 , and the last character has an index of -1 or len(a_string) — 1 .

# Split a string and get the Last element using split()

You can also use the str.split() method in a similar way.

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my_str = 'bobby-hadz-com' last = my_str.split('-')[-1] print(last) # 👉️ 'com' 

If your string ends with the specific separator, you might get a confusing result.

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my_str = 'bobby-hadz-com-' last = my_str.rsplit('-', 1)[-1] # 👇️ ['bobby-hadz-com', ''] print(my_str.rsplit('-', 1)) print(last) # 👉️ "" 

You can use the str.strip() method to remove the leading or trailing separator.

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my_str = 'bobby-hadz-com-' last = my_str.strip('-').rsplit('-', 1)[-1] print(last) # 👉️ "com" 

We used the str.strip() method to remove any leading or trailing hyphens from the string before calling the rsplit() method.

# Split a string and get the First element using partition()

You can also use the str.partition() method to split a string and get the first element.

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my_str = 'bobby-hadz-com' result = my_str.partition('-')[0] print(result) # 👉️ bobby 

The str.partition method splits the string at the first occurrence of the provided separator.

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my_str = 'bobby!hadz!com' separator = '!' # 👇️ ('bobby', '!', 'hadz!com') print(my_str.partition(separator)) 

The method returns a tuple containing 3 elements — the part before the separator, the separator, and the part after the separator.

If the separator is not found in the string, the method returns a tuple containing the string, followed by 2 empty strings.

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my_str = 'bobby-hadz-com' # 👇️ ('bobby-hadz-com', '', '') print(my_str.partition('!')) 

In our case, the expression would return the entire string if the separator is not contained in the string.

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my_str = 'bobby-hadz-com' result = my_str.partition('!')[0] print(result) # 👉️ bobby-hadz-com 

# Split a string and get the Last element using rpartition()

You can also use the str.rpartition method to split a string and get the last element.

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my_str = 'bobby-hadz-com' result = my_str.rpartition('-')[-1] print(result) # 👉️ com 

The str.rpartition method splits the string at the last occurrence of the provided separator.

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my_str = 'bobbyhadz.com/articles/python' result = my_str.rpartition('/')[2] print(result) # 👉️ 'python' # 👇️ ('bobbyhadz.com/articles', '/', 'python') print(my_str.rpartition('/')) 

The method returns a tuple containing 3 elements — the part before the separator, the separator, and the part after the separator.

If the separator is not found in the string, the method returns a tuple containing two empty strings, followed by the string itself.

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my_str = 'bobby-hadz-com' # 👇️ ('', '', 'bobby-hadz-com') print(my_str.rpartition('!')) 

Accessing the tuple at an index of -1 would return the entire string if the separator is not contained in the string.

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my_str = 'bobby-hadz-com' result = my_str.rpartition('1')[-1] print(result) # 👉️ bobby-hadz-com 

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

• How to Split a string by Tab in Python
• Split a string into fixed-size chunks in Python
• Split a String into a List of Integers in Python
• Split a String into multiple Variables in Python
• Split a String into Text and Number in Python
• How to convert a String to a Tuple in Python
• Split a string with multiple delimiters in Python
• Split a String by Newline characters in Python
• How to Split a string by Whitespace in Python
• How to Split a string on Uppercase Letters in Python
• Split a String, Reverse it and Join it back in Python
• Split a string without removing the delimiter in Python
• Split a String into a List of Characters in Python
• Flake8: f-string is missing placeholders [Solved]
• ValueError: DataFrame constructor not properly called [Fix]

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