In a string slice, the start and end values can be beyond limits. Why?

Q. In a string slice, the start and end values can be beyond limits. Why?

Answer = 

 

Python will consider the limits of the string i.e., for missing begin-index, it will consider 0 (the first index) and for missing last value, it will consider length of the string.

Example - 

>>> a = "Path Walla" 

>>>a[ :7 ]

Path w

>>> a [3:]

h Walla