String operations

Operation	Result	Examples
`x in s`	`True` if an item of s is equal to x, else `False`
`x not in s`	`False` if an item of s is equal to x, else `True`
`s + t`	the concatenation of s and t	>>> str = 'Hello World!' >>> print (str + "TEST") # Prints concatenated string Hello World!TEST
`s * n, n * s`	equivalent to adding s to itself n times	>>> str = 'Hello World!' >>> print (str * 2) # Prints string two times Hello World!Hello World!
`s[i]`	ith item of s, origin 0	>>> str = 'Hello World!' >>> print (str[0]) # Prints first character of the string H
`s[i:j]`	slice of s from i to j	>>> print (str[2:5]) # Prints characters starting from 3rd to 5th llo
`s[i:j:k]`	slice of s from i to j with step k	>>> str="Hello, World!" >>> print(str[1:10:2]) el,Wr
`len(s)`	length of s
`min(s)`	smallest item of s
`max(s)`	largest item of s
`s.index(x)`	index of the first occurrence of x in s
`s.count(x)`	total number of occurrences of x in s