how to assign values to parameters?

[wantaoliu]

import tensorflow as tf
import matplotlib.pyplot as plt
import numpy as np

tf.set_random_seed(1)
np.random.seed(1)


n_data = np.ones((100, 2))

x0 = np.random.normal(2*n_data, 1)      # class0 x shape=(100, 2)

By referring to the documentation, we can know the defination:
def normal(loc=0.0, scale=1.0, size=None):

but how to understand"np.random.normal(2*n_data, 1)",please