<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def rbinomial(n, p, size=None):
 """ Random binomial variates. """

    if not size:
        size = None
    return np.random.binomial(np.ravel(n), np.ravel(p), size)