如何为每个子图添加图例

Question

I have 4 subplots with 4 different lines and I want to make a legend in the upper right corner of each subplot that only shows the line associated with that subplot. How do I do that? I tried subplot1.legend() but it throws an error.

Code for subplot1:

import numpy as np
from scipy.stats import beta
from matplotlib import pyplot as plt

figure = plt.figure("Figure")
subplot1 = figure.add_subplot(2,2,1)
x = np.linspace (0, 1.0, 200) 
y1 = beta.pdf(x, 10, 7)
subplot1.plot(x, y1, "-", label="r'$\alpha=10, \beta=7$'")
subplot1.legend() #throws an error when I include this statement
plt.show()

Answer 1

Found the answer! I had a typo in my label. I changed the label to:

subplot1.plot(x, y1, "-", label=(r'$\alpha=21, \beta=11$'))