In the code below, commenting or uncommenting this line
`tmp_string = dirs[0]’ produces the error

Traceback (most recent call last):
  File "C:Users<pathwip_python_filesdef generate_dir_report_fn.py", line 60, in <module>
    generate_dir_report('data/dir-top','dir-report.txt')
  File "C:Users<path>wip_python_filesdef generate_dir_report_fn.py", line 32, in generate_dir_report
    tmp_string = dirs[0]
IndexError: list index out of range

Code

import os

def get_path_depth(path):
    path = os.path.normpath(path)
    return len(path.split(os.sep))

print(get_path_depth('dir1'))

def generate_dir_report(path, report_file_path):
    print("n ---- Starting generate_dir_report ----")
 
    # open file
    f = open(report_file_path,  "w")

    main_path_depth = get_path_depth(path)
    print("mpd =",main_path_depth,"n")

    # get the name of the base directory, printed later
    os_path_basename = os.path.basename(path)
    print("+ " + os_path_basename)
    #
    loop_count = 0
    temp_len = 0

    for root, dirs, files in sorted(os.walk(path)):
        # store variable `dir_indent` which you can compute as <depth of the root> - `main_path_depth` - 1
        # print("type is ",type(dirs[loop_count]), dirs[loop_count])
        # dir_indent = get_path_depth('dir1')
        # print("dir_indent",dir_indent)
        # dir_indent = get_path_depth(dirs[loop_count])
        #print(dirs[1])
        ## ------------------------------------------------------
        ## comment or uncomment line below to reproduce the error
        ## -----------------------------------------------------
        # tmp_string = dirs[0]
        tmp_string = dirs[0]

        # temp_len = get_path_depth(str(tmp_string))

        dir_indent = 1
        print("dir_indent = ",dir_indent,"loop_Count = ",loop_count)

        # store variable `file_indent` which you can compute as `dir_indent` + 1

        # write the `root` string into the `out` file as a single line>
        if(loop_count != 0):
          print("|-+ " + root)
          f.write("!-+ " + root + "n") 
          

        # write the `root` string into the `out` file as a single line>
        for file_name in sorted(files):
            # write the `file_name` string into the `out` file as a single line
            print(file_name)
            f.write(file_name + "n")

        loop_count = loop_count + 1

        # break


    f.close()
    print(" ---- Done ----n")

generate_dir_report('data/dir-top','dir-report.txt')

Inserting a break after the line, uncommenting no longer causes the error.
Variable `dirs1 is a list, element 0 should exist.