In Python, comments start with the # symbol.

The len() function returns the number of items in a list.

In Python, ** is used as the exponentiation operator.

In Python, a comment is created using the # symbol.

In Python, functions are defined using the def keyword.

In Python, ** is the exponentiation operator, so 2 ** 3 is 2 raised to the power of 3.

In Python, the for loop is used to iterate over sequences like lists and strings.

In Python, == is used to check if two values are equal.

In Python, floating-point numbers have a type of float.

In Python, len() counts all characters including spaces.

In Python, import is used to include external modules in the program.

In Python, an identifier cannot start with a digit.

In Python, input() always returns the user input as a string.

In Python, [] represents an empty list, so type([]) returns .

In Python, set() creates an empty set, while {} creates an empty dictionary.