String literals in Python
String literals in Python#
A string literal is where you specify the contents of a string in a program.
a = 'A string'
Here ‘A string’ is a string literal. The variable
a is a string variable,
or, better put in Python, a variable that points to a string.
String literals can use single or double quote delimiters.
a = 'A string' # string literal with single quotes b = "A string" # string literal with double quotes b == a # there is no difference between these strings
Literal strings with single quote delimiters can use double quotes inside them without any extra work.
print('Single quoted string with " is no problem')
Single quoted string with " is no problem
If you need an actual single quote character inside a literal string delimited by single quotes, you can use the backslash character before the single quote, to tell Python not to terminate the string:
print('Single quoted string containing \' is OK with backslash')
Single quoted string containing ' is OK with backslash
Likewise for double quotes:
print("Double quoted string with ' is no problem") print("Double quoted string containing \" is OK with backslash")
Double quoted string with ' is no problem Double quoted string containing " is OK with backslash
Some characters preceded by a backslash have special meaning. For example:
print('Backslash before "n", as in \n, inserts a new line character')
Backslash before "n", as in , inserts a new line character
If you do not want the backslash to have this special meaning, prefix your string literal with ‘r’, meaning “raw”:
print(r'Prefixed by "r" the \n no longer inserts a new line')
Prefixed by "r" the \n no longer inserts a new line
You can use triple quotes to enclose strings with more than one line:
print('''This string literal has more than one line''')
This string literal has more than one line
Triple quotes can use single or double quote marks:
print("""This string literal also has more than one line""")
This string literal also has more than one line