Tuesday, March 6, 2018

String Special Operators


String Special Operators in Python 3

Let us take one example –
                        Assume  a = ‘Hello’ ;  b = ‘Python’

Operator
Description
Example
+
Concatenation – Adds values on either side of the operator.
a + b will give HelloPython
*
Repetition – Creates new strings, concatenating multiple copies of the same string.
a*2 will give – HelloHello
[]
Slice – gives the character from the given index
a[1] will give e
[:]
Range Slice – Gives the characters from the given range.
a[1:4] will give ell
in
Membership – Returns true if a character exists in the given string.
H in a will give 1
not in
Membership – Returns true if a character does not exist in the given string
M not in a will give 1
r/R
Raw String - Suppresses actual meaning of Escape characters. The syntax for raw strings is exactly the
same as for normal strings with the exception of the
raw string operator, the letter "r," which precedes
the quotation marks. The "r" can be lowercase (r) or
uppercase (R) and must be placed immediately
preceding the first quote mark.
print r'\n' prints \n
and print R'\n'prints \n
       %
Format – Performs String formatting