Python中plot使用方法小白的福音

直接上代码：

import numpy as np
import matplotlib.pyplot as plt
from pylab import *

mpl.rcParams['font.sans-serif'] = ['SimHei']
def sigmoid(t):
    return 1. / (1. + np.exp(-t))
x_plot = np.linspace(-10., 10., 5000)
y_plot = sigmoid(x_plot)
plt.plot(x_plot, y_plot)
plt.show()