"None" value during input

Question

Why, if I execute the code below and input a data, on the screen appears a "none" value?

a = int(input(print("Start: \n")))
print(a)
b = int(input(print("End: \n")))
print(b)
c = int(input(print("Step: \n")))
print(c)

numbers = list(range(a, b, c))
print(numbers)

Answer 1

That's the return value of the print statement within your inputs(). input() doesn't need print(). Just use b = int(input("End: \n")) instead of b = int(input(print("End: \n"))) etc.

Answer 2

Means your range doesn't generate any number based on your input

For range(a, b, c)
a is start
b is end
c is step

Use positive step when end > start
Use negative step when start > end

Also start+step must not >= end