With the following code, I try to plot 12 different histograms in one picture using Matplotlib.

for graph in range(1,13):name = all_results[graph-1]plt.subplot(4,3,graph, title = name)plt.tight_layout()current_model = nameplt.hist(all_val_accuracies[current_model],#range = (0.49, 0.58),bins = 50)plt.xlabel('Accuracy')plt.ylabel('Frequency')plt.axis([0.48, 0.58, 0, 50])

With this code, all histograms are plotted in one image as how I indicated it.

However, the graphs itself are squeezed to such an extend that you cant see them anymore

What can I do so that these 12 histograms are plotted in one image and that each histogram can be seen clearly?

You should be able to set the size of your plots with

matplotlib.Figure.set_size_inches

To use this you will need to save the Figure object. You can include this in your code like this :

for graph in range(1,13):name = all_results[graph-1]fig, axs = plt.subplot(4,3,graph, title = name)plt.tight_layout()current_model = nameplt.hist(all_val_accuracies[current_model],#range = (0.49, 0.58),bins = 50)fig.set_size_inches(12, 12)plt.xlabel('Accuracy')plt.ylabel('Frequency')plt.axis([0.48, 0.58, 0, 50])