Faster and Shorter "dot" using itertools

Let's calculate the dot product of two vectors:

from itertools import starmap, izip
from operator import mul

def dot1(v1, v2):
  result = 0
  for i, value in enumerate(v1):
      result += value * v2[i]
  return result

def dot2(v1, v2):
  return sum(starmap(mul, izip(v1, v2)))

if __name__ == "__main__":
  from timeit import Timer

  num_times = 1000
  v1 = range(100)
  v2 = range(100)

  t1 = Timer("dot1(%s, %s)" % (v1, v2), "from __main__ import dot1")
  print t1.timeit(num_times) # 0.038722038269

  t2 = Timer("dot2(%s, %s)" % (v1, v2), "from __main__ import dot2")
  print t2.timeit(num_times) # 0.0260770320892

dot2 is faster and shorter, however dot1 is more readable - my vote goes to dot2.