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

How about:

In [19]: filter(set('0123456789').__contains__,str((1,2,3)))
Out[19]: '123'

I believe this is the simplest solution.

A very fast solution is:

plus=ord("0").__add__ # separate out for readability; bound functions are partially-applied functions
int(str(bytearray(map(plus,x)))) #str is necessary

How that stacks up against the next-fastest solution:

$ python -m timeit -s 'x=tuple(list(range(1,10))*10)' 'plus=ord("0").__add__;int(str(bytearray(map(plus,x))))'
10000 loops, best of 3: 47.7 usec per loop

$ python -m timeit -s "x=tuple(list(range(1,10))*10)" "int(''.join(map(str, x)))"
10000 loops, best of 3: 59 usec per loop