If I have a list of strings, for example here's a small part of my list:
small_list=['HETATM 2142 O DUM 2142 -26.000 -8.000 12.300','HETATM 2143 O DUM 2143 -26.000 -6.000 12.300']
Is there a way to remove the 12.300 from a string in this list and then replace it with something else?