Things you must know about Python strings

Python strings let you work with text. If you define text e.g. Python string, you can do so in two ways:

>>> s = 'abc'
>>> s
'abc'
>>>
>>> s = "abc"
>>> s
'abc'
>>> 

So single quoted string is the same as double quoted. You can be use this interchangeably, but preferably just pick one.

You can even introduce quotes inside the strings:

      >>> 'abc "d'," abc'd "
      ( 'abc "d'," abc'd ")

Python can automatically merge strings. To do so you should use a + instead of a comma. A comma will give you a tuple.

So not this:

>>> s = "hello ","world"
>>> s
('hello ', 'world')

Also, in the above example: the comma in the middle of the string, so the final form is a tuple rather than a string

But this concatenates strings:

>>> s = "hello " + "world"
>>> s
'hello world'
>>> 

Use the escape character for special characters

Python supports many special characters. An escape character starts with a slash.

>>> print('hello\nhello\n',end='')
hello
hello
>>> 

Common escape characters:

Escape	sense
\	Continuous, then the top line
\	Backslash
\'	Single quotes
\"	Double quotes
\n	Newline
\a	Bell
\b	back
\f	feed
\r	returned
\t	horizontal tab
\v	vertical tab
\n{id}	unicode database id
\Uhhhh	unicode16 bit hexadecimal value
\Uhhhh	unicode32 bit hexadecimal value
\Xhh	hexadecimal values
\Ooo	octal value
\0	Null