Graph Line Parallel to X Axis in Matplotlib

Question

I'm thinking this is extremely simple. I would like to graph the line y = 7.87. This graphs a line parallel to the y-axis, but I'm looking for something horizontal, parallel with x-axis. Any ideas?

    import matplotlib.pyplot as plt

    plt.axvline(x = 7.85)

    plt.show() 

Answer 1

It really is quite simple:

import matplotlib.pyplot as plt

plt.axhline(y=7.87)

plt.show() 

The h and v in the function names (axhline and axvline) stand for horizontal and vertical.