# Pyplot 绘制三条线 在一次调用 [plot](https://matplotlib.org/api/_as_gen/matplotlib.pyplot.plot.html#matplotlib.pyplot.plot) 绘图中绘制三个线图。 ```python import numpy as np import matplotlib.pyplot as plt # evenly sampled time at 200ms intervals t = np.arange(0., 5., 0.2) # red dashes, blue squares and green triangles plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^') plt.show() ``` ![Pyplot 绘制三条线示例](https://matplotlib.org/_images/sphx_glr_pyplot_three_001.png) ## 参考 此示例显示了以下函数、方法、类和模块的使用: ```python import matplotlib matplotlib.pyplot.plot matplotlib.axes.Axes.plot ``` ## 下载这个示例 - [下载python源码: pyplot_three.py](https://matplotlib.org/_downloads/pyplot_three.py) - [下载Jupyter notebook: pyplot_three.ipynb](https://matplotlib.org/_downloads/pyplot_three.ipynb)