<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def print_modified_files(opts, anchors):
 """ Prints out which files were modified amongst those looked at :param anchors: Dictionary mapping file path strings to dictionaries containing AnchorHub tag/generated header key-value pairs """

    print("Files with modifications:")
    for file_path in anchors:
        print("  " + strip_prefix(file_path, opts.abs_input))
    print("--------------------")
    print(str(len(anchors)) + " total\n")