{"id":1841,"date":"2020-12-26T11:35:03","date_gmt":"2020-12-26T11:35:03","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1841"},"modified":"2020-12-28T01:59:16","modified_gmt":"2020-12-28T01:59:16","slug":"python-string-concatenation","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-concatenation\/","title":{"rendered":"7 Ways to Concatenate Strings in Python"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn various ways to concatenate strings in Python.<\/p>\n\n\n\n

Python provides you with various ways to concatenate one or more strings<\/a> into a new string.<\/p>\n\n\n\n

Since Python string is immutable<\/a>, the concatenation always results in a new string.<\/p>\n\n\n\n

1) Concatenating literal strings #<\/a><\/h2>\n\n\n\n

To concatenate two or more literal strings, you just need to place them next to each other. For example:<\/p>\n\n\n

s = 'String'<\/span>  ' Concatenation'<\/span>\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
Note that this way won’t work for the string variables.<\/p>\n\n\n\n
2) Concatenating strings using the + operator #<\/a><\/h2>\n\n\n\n
A straightforward way to concatenate multiple strings into one is to use the + operator:<\/p>\n\n\n
s = 'String'<\/span> + ' Concatenation'<\/span> \nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
And the + operator works for both literal strings and string variables. For example:<\/p>\n\n\n
s1 = 'String'<\/span>\ns2 = s1 + ' Concatenation'<\/span>\nprint<\/span>(s2)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
3) Concatenating strings using the += operator #<\/a><\/h2>\n\n\n\n
Similar to the + operator, you can use the += operator to concatenate multiple strings into one:<\/p>\n\n\n
s = 'String'<\/span>\ns += ' Concatenation'<\/span>\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
4) Concatenating strings using the join() method #<\/a><\/h2>\n\n\n\n
The join()<\/code> method allows you to concatenate a list of strings into a single string:<\/p>\n\n\n
s1 = 'String'<\/span>\ns2 = 'Concatenation'<\/span>\n\ns3 = ''<\/span>.join([s1, s2])\nprint<\/span>(s3)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
StringConcatenation<\/code><\/span><\/pre>\n\n\n
The join()<\/code> method also allows you to specify a delimiter when concatenating strings. For example:<\/p>\n\n\n
s1 = 'String'<\/span>\ns2 = 'Concatenation'<\/span>\n\ns3 = ' '<\/span>.join([s1, s2])\nprint<\/span>(s3)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, we use the join()<\/code> method to concatenate strings delimited by a space.<\/p>\n\n\n\n
The following example use the join()<\/code> method to concatenate strings delimited by a comma:<\/p>\n\n\n
s1, s2, s3 = 'Python'<\/span>, 'String'<\/span>, 'Concatenation'<\/span>\ns = ','<\/span>.join([s1, s2, s3])\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Python,String<\/span>,Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
5) Concatenating strings using the %-formatting #<\/a><\/h2>\n\n\n\n
String objects have the built-in % operator that allows you to format strings. Also, you can use it to concatenate strings. For example:<\/p>\n\n\n
s1, s2, s3 = 'Python'<\/span>, 'String'<\/span>, 'Concatenation'<\/span>\ns = '%s %s %s'<\/span> % (s1, s2, s3)\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Python String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, Python substitutes a %s<\/code> in the literal string by corresponding string variable in the tuple that follows the %<\/code> operator.<\/p>\n\n\n\n
6) Concatenating strings using the format() method #<\/a><\/h2>\n\n\n\n
You can use the format()<\/code> method to concatenate multiple strings into a string. For example:<\/p>\n\n\n
s1, s2, s3 = 'Python'<\/span>, 'String'<\/span>, 'Concatenation'<\/span>\ns = '{} {} {}'<\/span>.format(s1, s2, s3)\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Python String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, you use the {}<\/code> in the string literal and pass the string that you want to concatenate to the format()<\/code> method. The format()<\/code> method substitutes the {}<\/code> by the corresponding string argument.<\/p>\n\n\n\n
7) Concatenating strings using f-strings #<\/a><\/h2>\n\n\n\n
Python 3.6 introduced the f-strings that allow you to format strings in a more concise and elegant way.<\/p>\n\n\n\n
And you can use the f-strings to concatenate multiple strings into one. For example:<\/p>\n\n\n
s1, s2, s3 = 'Python'<\/span>, 'String'<\/span>, 'Concatenation'<\/span>\ns = f'{s1} {s2} {s3}'<\/span>\nprint<\/span>(s)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Python String<\/span> Concatenation<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
Which method should you use to concatenate strings #<\/a><\/h2>\n\n\n\n
Even though there’re multiple ways to concatenate strings in Python, it’s recommended to use the join()<\/code> method, the +<\/code> operator, and f-strings to concatenate strings.<\/p>\n
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