what is the format if input text?

[myrainbowandsky]

when I run ompute_all_features_fast_py3/run_file.py. something is not right.
what is the format of input text?

lawrencexu@LawrencedeMac-mini compute_all_features_fast_py3 % /usr/bin/python3 /Users/lawrencexu/Documents/python2pro/Language-Features-for-News-master/compute_all_features_fast_py3/run_file.py
Processing files: 0%| | 0/2 [00:00<?, ?file/s]Process ArticleProcessor-1:
Traceback (most recent call last):
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
self.run()
File "/Users/lawrencexu/Documents/python2pro/Language-Features-for-News-master/compute_all_features_fast_py3/run_file.py", line 109, in run
date = file_name.split("--")[1]
IndexError: list index out of range
Process ArticleProcessor-4:
Traceback (most recent call last):
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
self.run()
File "/Users/lawrencexu/Documents/python2pro/Language-Features-for-News-master/compute_all_features_fast_py3/run_file.py", line 109, in run
date = file_name.split("--")[1]
IndexError: list index out of range

Total time: 5.02s
Mean time per file: 2.5092s
Mean files per seconds: 0.40