{"id":1845,"date":"2020-12-26T12:15:58","date_gmt":"2020-12-26T12:15:58","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1845"},"modified":"2020-12-28T01:03:43","modified_gmt":"2020-12-28T01:03:43","slug":"python-string-split","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-split\/","title":{"rendered":"Python String split()"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Python String split()<\/code> method to split a string into a list of substrings.<\/p>\n\n\n\n

Introduction to the Python string split() method #<\/a><\/h2>\n\n\n\n

The split()<\/code> method splits a string<\/a> and returns a list<\/a> of substrings. The following shows the syntax of the split()<\/code> method:<\/p>\n\n\n

str.split(sep=None<\/span>, maxsplit=-1<\/span>)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The split()<\/code> method accepts two optional parameters:<\/p>\n\n\n\n
1) sep parameter #<\/a><\/h3>\n\n\n\n
The sep<\/code> parameter is the delimiter that specifies where in the str<\/code> each split should occurs.<\/p>\n\n\n\n
If you don’t pass the sep<\/code> argument or use None<\/code>, the split()<\/code> method will treat consecutive whitespace as a single delimiter and return a list of non-empty substrings.<\/p>\n\n\n\n
2) maxsplit parameter #<\/a><\/h3>\n\n\n\n
The maxsplit<\/code> parameter specifies the maximum number of splits that the method will carry.<\/p>\n\n\n\n
If you pass the maxsplit<\/code>, the result list will have at most maxsplit + 1<\/code> elements.<\/p>\n\n\n\n
If you omit the maxsplit<\/code> or pass -1<\/code>, then there’s no limit on the number of splits. In other words, the result list will contain all possible splits.<\/p>\n\n\n\n
Python String split() example #<\/a><\/h2>\n\n\n\n
Let’s take some examples of using the split()<\/code> method.<\/p>\n\n\n\n
1) Using the Python String split() method to split a string into words #<\/a><\/h3>\n\n\n\n
The following example illustrates how to sue the split()<\/code> method to split a string into multiple words:<\/p>\n\n\n
s = 'Python String split'<\/span>\nsubstrings = s.`split()`\nprint(substrings)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
['Python'<\/span>, 'String'<\/span>, 'split'<\/span>] <\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, we didn’t pass any argument to the split()<\/code> method. Therefore, the split()<\/code> method splits the strings into words with all possible splits.<\/p>\n\n\n\n
2) Using the Python String split() method to split a string using a separator #<\/a><\/h3>\n\n\n\n
The following example shows how to use the split()<\/code> method to split a string using the comma (,) separator:<\/p>\n\n\n
s = 'John,Doe,john.doe@example.com,(408)-999-1111'<\/span>\ncontact = s.split(','<\/span>)\nprint(contact)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
['John'<\/span>, 'Doe'<\/span>, 'john.doe@example.com'<\/span>, '(408)-999-1111'<\/span>]<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
3) Using the Python String split() method to split a string using the sep and maxsplit parameters #<\/a><\/h3>\n\n\n\n
The following example illustrates how to use the split()<\/code> method with the maxsplit parameter:<\/p>\n\n\n
s = 'apple,orange,banana'<\/span>\nresults = s.split(','<\/span>, 1<\/span>)\nprint(results)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
['apple'<\/span>, 'orange,banana'<\/span>]<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Since the maxsplit<\/code> is one, the number of elements in the results list is two.<\/p>\n\n\n\n
If you pass -1 or skip passing the maxsplit<\/code> argument, the split()<\/code> will return all possible splits:<\/p>\n\n\n
s = 'apple,orange,banana'<\/span>\nresults = s.split(','<\/span>, -1<\/span>)\nprint(results)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
['apple'<\/span>, 'orange'<\/span>, 'banana'<\/span>]<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Summary #<\/a><\/h2>\n\n\n\n
  • Use the Python String split()<\/code> method to split a string into a list of substrings.<\/li>
  • Use the sep<\/code> argument to specify where the split should occur.<\/li>
  • Use the maxsplit<\/code> argument to limit the number of splits.<\/li><\/ul>\n
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