import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", label="sine")
plt.plot(x, y2, "-r", label="cosine")
plt.legend(loc="upper left")
plt.ylim(-1.5, 2.0)
plt.show()plt.legend(loc='upper right')plt.legend(['first', 'second']);plt.legend(loc='best')
plt.legend(loc='upper right')
plt.legend(loc='Center left')
plt.legend(loc='Upper center')
# etc.
import matplotlib.pyplot as plt
#define x and ysin
plt.plot(x,ysin,label='sin(x)')
plt.legend()
plt.show()
ax.plot([1, 2, 3], label='Inline label')
ax.legend()