I tested to run single chromosome structure script. fig1.py: import data_tools import plotting structure = data_tools.structure_from_file("outhic_1_500kb_structure.tsv") plotting.plot_structure_interactive(structure, color=(0,0.5,0.7), radius=0.01) **(miniMDS) [xh@mu01 bed]$ python3 fig1.py** Traceback (most recent call last): File "/pub3/Liu-group/songxh/hi_c/ld/minimds/bed/fig1.py", line 3, in <module> structure = data_tools.structure_from_file("outhic_1_500kb_structure.tsv") AttributeError: module 'data_tools' has no attribute 'structure_from_file' if you have some ideas, please.