Single, double, and triple quotation marks in Python

• There are single quotation marks and double quotation marks in the string

>>> "it's a string"
"it's a string"

• There are double quotation marks and single quotation marks in the string

>>> 'it is "python"'
'it is "python"'

• String has multiple lines with three quotation marks

>>> s='''it's a string '''
>>> s
"it's\na\nstring\n"
>>> print(s)
it's
a
string

If you use single or double quotation marks, you will get an error , Also note the newline character in the string .

• Single quotation marks 、 Double quotation marks can also represent multiline strings , But you need to put a backslash after each line

>>> s='it\
is\
a\
strng\
'
>>> s
'itisastrng'

• Escape backslash
  Such as ： The string represented by single quotation marks has single quotation marks

>>> 'it\'s a string'
"it's a string"

other （ Ignore the following is Different colors ）

>>> s='It\nis\tpython'
>>> s
'It\nis\tpython'
>>> print(s)
It
is python

• Original string r
  Output whatever it is , You can find that the third line escapes the newline character into ordinary characters with the escape character

>>> s=r"this\nis\na\nstring"
>>> s
'this\\nis\\na\\nstring'
>>> print(s)
this\nis\na\nstring