/Python/How to scatter plot in matplotlib of two sets

How to scatter plot in matplotlib of two sets

import matplotlib.pyplot as plt
fig = plt.figure()
ax1 = fig.add_subplot(111)
ax1.scatter(x1, y1, s = 10, c = 'b', label = 'elbow')
ax1.scatter(x2, y2, s = 10, c = 'r', label = 'shoulder')
plt.legend(loc='upper left');
plt.show()

import matplotlib.pyplot as plt

x = range(100)
y = range(100,200)
fig = plt.figure()
ax1 = fig.add_subplot(111)

ax1.scatter(x[:4], y[:4], s=10, c='b', marker="s", label='first')
ax1.scatter(x[40:],y[40:], s=10, c='r', marker="o", label='second')
plt.legend(loc='upper left');
plt.show()

Source: stackoverflow.com

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