Remove the last comma from a String in Python

# Table of Contents

1. Remove the last comma from a String in Python
2. Remove the last comma from a String using str.rsplit()
3. Remove the last comma from a String using slicing

# Remove the last comma from a String in Python

Use the str.rstrip() method to remove the last comma from a string, e.g. my_str.rstrip(',').

The str.rstrip() method will return a copy of the string with the trailing comma removed.

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my_str = 'bobby,hadz,com,'

new_str = my_str.rstrip(',')
print(new_str)  # 👉️ bobby,hadz,com

The first example uses the str.rstrip() method to remove the last character from a string if it's a comma.

The str.rstrip() method takes a string containing characters as an argument and returns a copy of the string with the specified trailing characters removed.

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my_str = 'bobbyhadz.com'

result = my_str.rstrip('ocm.')
print(result)  # 👉️ 'bobbyhadz'

The method doesn't change the original string, it returns a new string. Strings are immutable in Python.

Note that the str.rstrip() method only removes the comma if it's the last character in the string.

The str.rstrip() method would remove all trailing commas from the string, not just the last one.

Alternatively, you can use the str.rsplit() method.

# Remove the last comma from a String using str.rsplit()

This is a two-step process:

1. Use the str.rsplit() method to split the string on the comma, once, from the right.
2. Use the str.join() method to join the list into a string.

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my_str = 'bobby,hadz,com'


new_str = ''.join(my_str.rsplit(',', 1))
print(new_str)  # 👉️ bobby,hadzcom

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:

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

The last step is to use the str.join() method to join the list into a string.

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.

We used an empty string separator to join the list into a string without a delimiter.

# Remove the last comma from a String using slicing

You can also use string slicing to remove the last comma from a string.

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my_str = 'bobby,hadz,com,'

my_str = my_str[:-1]

print(my_str) # 👉️ bobby,hadz,com

The syntax for string slicing is a_string[start:stop:step].

The start index is inclusive, whereas the stop index is exclusive (up to, but not including).

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.

Negative indices are used to count backward. A negative stop index of -1 means "remove the last character from the string".

The code sample removes the last character regardless if it's a comma.

Use an if statement if you need to check if it's a comma before removing it.

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my_str = 'bobby,hadz,com,'

if my_str[-1] == ',':
    my_str = my_str[:-1]

print(my_str)  # 👉️ bobby,hadz,com

The code sample only removes the last character from the string if it's a comma.

# Additional Resources

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

• Remove first occurrence of character from String in Python
• Remove the First N characters from String in Python
• Remove the last N characters from a String in Python
• Remove Newline characters from a List or a String in Python
• Remove non-alphanumeric characters from a Python string
• Remove non-ASCII characters from a string in Python
• Remove the non utf-8 characters from a String in Python