Final answer:
Upon import, the random module in Python uses the system time as a default seed for random number generation to ensure pseudo-random sequences which can vary between program runs.
Step-by-step explanation:
When the random module is imported in Python, it typically uses the current system time as the default seed value for random number generation. This is done to ensure that the sequence of numbers produced during a session is pseudo-random and to create variations between different runs of the program. However, the seed can be set manually by using the random.seed() function which allows for the reproduction of the sequence of random numbers by using the same seed again.