Is there any value that represents every number in python?

Question

I am making a denary to binary converter ?in which I need to have 2 to the power of every number. Is there any way that I could do this

Answer 1

print(bin(eval(input("enter a number "))))

Answer 2

so how would I do 2 to the power of every number. it's supposed to be: if input is a 2 to the power of something