Use any one of these ways: str = 'Peter "Piper" Picked A Peck Of Picked "Pepper"' str = "Peter \"Piper\" Picked A Peck Of Picked \"Pepper\""

Although, int is diffeent than float type but value wise both are same and python is smart enough to tackle this and consider them same as value wise.

There is nothing to print so end and sep does not make much sense for this line itself. Instead if there is something to print like below, then the output is different- print("Hello","World", end='',sep='@@') Output: Hello@@World

Initially i = 2 so control will go to else part. return f(0) * f(2) f(0) will again go to else part and this will keep on going to else part because i < 2 if false.

Both variables point to the same list values. Changing one variable changes the underlying list. list2 points to the same memory as list1. If you remove "Pen" from list2, list1 will also change.

"String" * n is always StringStringString...n times

The value of key 'B' is changed to 'Ball'

Addition of tuples are allowed in python

It is mandatory to indent the Python code Python does not need a variable declaration explicitly # at start of each line is used as a single line comments as well as multi line comments. For multi line comments, you can also use the """ """ (triple quote)