demo_python_ml_traintest_1.py:
x
 
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
plt.scatter(x, y)
plt.show()
python@w3school.org.cn:/home/python#python demo_python_ml_traintest_1.py