Show color cycle:

Example of a multiline plot with each color in the color cycle.

import matplotlib.pyplot as plt

for i in range(10):
    plt.plot([i]*5, c='C'+str(i), label='C'+str(i))

# Plot a line graph
plt.xlim(0, 5)

# Add legend
plt.legend()

# Display the graph on the screen
plt.show()