{"id":81,"date":"2020-10-03T01:17:15","date_gmt":"2020-10-03T01:17:15","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=81"},"modified":"2025-03-30T13:44:50","modified_gmt":"2025-03-30T13:44:50","slug":"python-string","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-basics\/python-string\/","title":{"rendered":"Python String"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn about Python string and its basic operations.<\/p>\n\n\n\n

Introduction to Python string #<\/a><\/h2>\n\n\n\n

A string is a series of characters. In Python, anything inside quotes is a string. And you can use either single or double quotes. For example:<\/p>\n\n\n

message = 'This is a string in Python'<\/span>\nmessage = \"This is also a string\"<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
If a string contains a single quote, you should place it in double-quotes like this:<\/p>\n\n\n
message = \"It's a string\"<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
And when a string contains double quotes, you can use the single quotes:<\/p>\n\n\n
message = '\"Beautiful is better than ugly.\". Said Tim Peters'<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
To escape the quotes, you use the backslash (\\<\/code>). For example:<\/p>\n\n\n
message = 'It\\'s also a valid string'<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The Python interpreter will treat the backslash character (\\) special. If you don’t want it to do so, you can use raw strings by adding the letter r<\/code> before the first quote. For example:<\/p>\n\n\n
message = r'C:\\python\\bin'<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Creating multiline strings #<\/a><\/h3>\n\n\n\n
To span a string multiple lines, you use triple-quotes “””…””” or ”’…”’. For example:<\/p>\n\n\n
help_message = '''\nUsage: mysql command\n    -h hostname     \n    -d database name\n    -u username\n    -p password \n'''<\/span>\n\nprint(help_message)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
It’ll output the following if you execute the program:<\/p>\n\n\n
Usage: mysql command\n    -h hostname\n    -d database name\n    -u username\n    -p password<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Using variables in Python strings with the f-strings #<\/a><\/h2>\n\n\n\n
Sometimes, you want to use the values of variables<\/a> in a string. <\/p>\n\n\n\n
For example, you may want to use the value of the name<\/code> variable inside the message<\/code> string variable:<\/p>\n\n\n
name = 'John'<\/span>\nmessage = 'Hi'<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
To do it, you place the letter f<\/code> before the opening quotation mark and put the brace around the variable name:<\/p>\n\n\n
name = 'John'<\/span>\nmessage = f'Hi {name}<\/span>'<\/span>\nprint(message)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Python will replace the {name}<\/code> by the value of the name<\/code> variable. The code will show the following on the screen:<\/p>\n\n\n
Hi John<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The message<\/code> is a format string, or f-string in short. Python introduced the f-string in version 3.6.<\/p>\n\n\n\n
Concatenating Python strings #<\/a><\/h2>\n\n\n\n
When you place the string literals next to each other, Python automatically concatenates<\/a> them into one string. For example:<\/p>\n\n\n
greeting = 'Good '<\/span> 'Morning!'<\/span>\nprint(greeting)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Good Morning!<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
greeting = 'Good '<\/span>\ntime = 'Afternoon'<\/span>\n\ngreeting = greeting + time + '!'<\/span>\nprint(greeting)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Good Afternoon!<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Accessing string elements #<\/a><\/h2>\n\n\n\n
Since a string is a sequence<\/a> of characters, you can access its elements using an index. The first character in the string has an index of zero.<\/p>\n\n\n\n
The following example shows how to access elements using an index:<\/p>\n\n\n
str = \"Python String\"<\/span>\nprint(str[0<\/span>]) # P<\/span>\nprint(str[1<\/span>]) # y<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
How it works:<\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
To concatenate two string variables<\/a>, you use the operator +<\/code>:<\/p>\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n