Python convert Tuple to Integer

Question

Is there any function that can convert a tuple into an integer?

Example:

input = (1, 3, 7)

output = 137

Answer 1

Just another way to do it

>>> sum(n*10**i for (i,n) in enumerate(input[::-1]))
137

and yet another

>>> int(str(input).translate(None,'(,) '))
137