Plotting Ramachandran Plot from more than one PDB file
You could probably use PyRAMA for that. The only problem is that by PyRAMA plots to display, while you probably would like to save to a file.

One way to get around this is to:


Patch PyRAMA to allow ramachandran function to accept output image filename.

def ramachandran(file_name_list, output_image=None):
    ...
    plt.tight_layout()
    if output_image is not None:
        plt.savefig(output_file, dpi=300)
    else:
        plt.show()


If this works as expected I would really encourage you to submit a pull-request (or at least open an issue) on github.
Now you can write your main script:

from glob import iglob

from rama_lib.ramachandran_calc import ramachandran


for pdb_filename in iglob('/my/dir/with/pdb/', '*.pdb'):
    img_filename = pdb_filename.rsplit('.', 1)[0] + '.png'
    ramachandran((pdb_filename,), img_filename)



I did not test the code, but I hope you get an idea.

There are also other ways to make a ramachandran plot in python. Please check: 1, 2, 3.