python double not code example

Example 1: double in python

print("Their is nothing like double in python ")
print("In python float is used for decimals input")
# Example
num = float(input("Enter any decimal Number"))
print(type(num))

Example 2: javascript operator double not

// convert to boolean 
// The following examples are the only values which result in a false expression

!!0 // false
!!"" // false
!!null // false
!!undefined // false
!!NaN // false