<｜begin▁of▁sentence｜>### Instruction:
Given a custom color palette defined with colors ['#FF5733', '#33FF57', '#3357FF'], how can you determine the number of colors in this palette using the __len__ method in Python?
### Response:
from matplotlib.colors import ListedColormap

# Create a custom color palette
custom_palette = ListedColormap(['#FF5733', '#33FF57', '#3357FF'])

# Get the number of colors in the palette
num_colors = len(custom_palette)

print(f'Number of colors in the palette: {num_colors}')
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