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Python String split() Method

The Python string split() method breaks a string into smaller parts and returns those parts as a list.

Use it when you want to turn one string into multiple strings, such as:

  • splitting a sentence into words
  • splitting comma-separated text
  • breaking simple structured text into pieces

Quick example #

text = "apple,banana,cherry"
parts = text.split(",")
print(parts)
# ['apple', 'banana', 'cherry']

Use split() when you want to turn one string into a list of smaller strings.

What split() does #

split() is a string method.

It:

  • divides a string into parts
  • returns a new list of strings
  • does not change the original string

Example:

text = "red blue green"
parts = text.split()

print(text)
print(parts)

Output:

red blue green
['red', 'blue', 'green']

If you are new to string methods, see Python strings explained: basics and examples.

Basic syntax #

string.split(separator, maxsplit)

Both arguments are optional:

  • separator tells Python where to split
  • maxsplit limits how many splits happen

If separator is not given, Python splits on whitespace.

Example:

text = "one two three"
print(text.split())

Output:

['one', 'two', 'three']

Using split() with no separator #

When you call split() with no argument, Python splits on whitespace.

Whitespace includes:

  • spaces
  • tabs
  • new lines

Python also treats repeated whitespace as a single separator.

Example:

text = "Python   is\tfun\nand useful"
parts = text.split()

print(parts)

Output:

['Python', 'is', 'fun', 'and', 'useful']

This is useful when you want simple word splitting.

split() vs split(' ') #

These are not the same.

text = "a  b   c"

print(text.split())
print(text.split(" "))

Output:

['a', 'b', 'c']
['a', '', 'b', '', '', 'c']
  • split() uses any whitespace and ignores repeated spaces
  • split(" ") only splits on the space character and can create empty strings

If you need to clean extra spaces before or after text, Python string strip() method is often useful.

Using a custom separator #

You can pass your own separator, such as ",", "-", or "::".

Python splits only where that exact separator appears.

Example with commas:

text = "apple,banana,cherry"
parts = text.split(",")

print(parts)

Output:

['apple', 'banana', 'cherry']

Example with a longer separator:

text = "2024::10::31"
parts = text.split("::")

print(parts)

Output:

['2024', '10', '31']

This is common when working with simple data formats.

For more task-focused examples, see how to split a string in Python.

Using maxsplit #

maxsplit limits the number of splits.

After that limit is reached, the rest of the string stays together in the last item.

Example:

text = "name:age:city:country"
parts = text.split(":", 2)

print(parts)

Output:

['name', 'age', 'city:country']

Here:

  • Python splits at the first :
  • then splits at the second :
  • then stops

This is useful when only the first few separators matter.

Another example:

text = "apple banana cherry grape"
print(text.split(" ", 1))

Output:

['apple', 'banana cherry grape']

What split() returns #

The result of split() is always a list.

Each item in that list is a string.

Example:

text = "cat,dog,bird"
parts = text.split(",")

print(parts)
print(type(parts))
print(parts[0])

Output:

['cat', 'dog', 'bird']
<class 'list'>
cat

Because the result is a list, you can:

  • loop over it
  • access items by index
  • combine items again later

If you want to turn the list back into one string, use Python string join() method.

Example:

parts = ['cat', 'dog', 'bird']
text = "-".join(parts)

print(text)

Output:

cat-dog-bird

Common edge cases #

Here are some cases that often surprise beginners.

Splitting an empty string with no separator #

text = ""
print(text.split())

Output:

[]

Splitting an empty string with a custom separator #

text = ""
print(text.split(","))

Output:

['']

Separator not found #

If Python does not find the separator, it returns a one-item list containing the original string.

text = "hello"
print(text.split(","))

Output:

['hello']

When to use split() #

Use split() when you need to:

  • split a sentence into words
  • split comma-separated values
  • break lines or simple structured text into parts

It is especially useful for tasks like:

  • cleaning text
  • parsing user input
  • processing simple file content

Common mistakes #

Beginners often run into these problems:

  • expecting split() to change the original string
  • forgetting that split() returns a list, not a string
  • using the wrong separator
  • assuming split(' ') behaves the same as split()
  • using an index that does not exist after splitting

Example of a common mistake:

text = "a,b,c"
text.split(",")

print(text)

Output:

a,b,c

This happens because the result was not saved.

Correct version:

text = "a,b,c"
parts = text.split(",")

print(parts)

Output:

['a', 'b', 'c']

Another common problem is using an index that does not exist:

text = "apple,banana"
parts = text.split(",")

print(parts[2])

This causes an error because there is no third item. If you need help with that, see IndexError: list index out of range.

Useful debugging checks #

If split() is not giving the result you expect, try printing these:

print(text)
print(text.split())
print(text.split(','))
print(len(text.split(',')))
print(type(text.split(',')))

These checks help you confirm:

  • what the original string looks like
  • which separator works
  • how many items were created
  • that the result is a list

FAQ #

What is the difference between split() and split(' ')? #

split() uses any whitespace and ignores repeated spaces.

split(' ') only splits on the space character and can produce empty strings.

Does split() change the original string? #

No. Strings are immutable. split() returns a new list.

What does maxsplit do? #

It sets the maximum number of splits. After that, the rest of the string stays in the final list item.

Why am I getting a list instead of a string? #

Because split() always returns a list of strings.

See also #

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