How to use Strings in Python ?

Strings are immutable sequences (cannot be changed and left-to-right order) in Python.

Both strings (in single or double quotes) are same.

>>> ‘Hello World’

>>> “Hello World"

It allows to embed a quote character of the other inside a string.

>>> “knight’s” , ‘knight”s’

Basic String operations

len()

>>> len(‘abc’)

>>> a=‘abc’

>>> len(a)

+

Concatenation

Adding two string objects creates a new string object

>>> ‘abc’ + ‘def’

>>> a=‘Hello'

>>> b=‘World’

>>> a + b

>>> a+ ‘ ’ +b

* 

Repetition

Example: Print a line of 80 dashes

>>> print ‘-’ * 80

INDEX AND SLICE

>>> aa=“SLICEOFSPAM”

>>> aa[0], aa[-2]

(‘S’,’A’)

>>> S[1:3], S[1:], S[:-1]

(‘LI’, ‘LICEOFSPAM’, ‘SLICEOFSPA’)