#Three lines to make our compiler able to draw:
import sys
import matplotlib
matplotlib.use('Agg')
import numpy
import matplotlib.pyplot as plt
numpy.random.seed(2)
x = numpy.random.normal(3, 1, 100)
y = numpy.random.normal(150, 40, 100) / x
train_x = x[:80]
train_y = y[:80]
test_x = x[80:]
test_y = y[80:]
plt.scatter(train_x, train_y)
plt.show()
#Two lines to make our compiler able to draw:
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()