input: Write a function to generate a random number using a given seed value.
  assert random_number(99) == 0.6722780022632425
  assert random_number(42) == 0.6394267984578837
  assert random_number(0) == 0.8444218515250481
output: import random
  
  def random_number(seed):
      random.seed(seed)
      return random.random()