create a 2 by 4 graph in matplotlib in python

To create a 2 by 4 graph in matplotlib, you can use the subplot function to define the location of each plot within the larger figure. Here's an example:

main.py
import matplotlib.pyplot as plt

# Create the figure and define the subplot layout
fig, axs = plt.subplots(nrows=2, ncols=4)

# Iterate over the subplots and plot data
for i, ax in enumerate(axs.flatten()):
    x = [1, 2, 3, 4]
    y = [(i+1)*val for val in x]
    ax.plot(x, y)
    # Set the title for each subplot
    ax.set_title('Plot {}'.format(i+1))

# Add a title to the entire figure
fig.suptitle('My 2x4 Graph', fontsize=14)

# Display the graph
plt.show()
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In this example, we start by importing the matplotlib library. We then create a figure using the subplots function and specify a 2 by 4 grid of subplots. We then iterate over each subplot and plot some sample data using the plot function. We also set a title for each subplot. Finally, we add a title to the entire figure and display the graph using the show function.