sample

+ ==> concatenate two strings

*  ==> multiply string

+= concatenate and assign to a variable

a+b="PrepInsta"

2*(a+b)="PrepInstaPrepInsta"

in is a membership operator and checks "InstaP" is there in 2*(a+b) and returns True if present else False

ord() function accepts only unit length string(character) and returns integer value for a given character.

If character is lower , it will convert it into uppercase and concatenate to another variable

When prefixed with ‘r’ a string becomes rawstring and escape sequences are not converted.

x=st.split('a')
x becomes , x=['C', 'dbury D', 'iry Milk']

length of x is 3

replaces "a" with "x" for first two occurrences in the string

 rstrip()-splits string at specified separator and returns string

startswith()-returns true if the string starts with specified value.

zfill() - adds zeroes at the beginning of string until it reaches the specified length.

lstrip removes the string in the argument present on the left side of the original string.