Some problems about 'episode_len'

[Hpeox]

We have tried many different episode_len, (80, 90,100, 120,150), but with a length less than 120, the pd.read_csv fails at line 233, reading TIMESTAMP_PATH_TEMP,

the error message is:

Traceback (most recent call last):
  File "data_collection.py", line 233, in <module>
    timestamps = pd.read_csv(TIMESTAMP_PATH_TEMP)
  File "/home/gyc/miniconda3/envs/FastUMI/lib/python3.8/site-packages/pandas/io/parsers/readers.py", line 912, in read_csv
    return _read(filepath_or_buffer, kwds)
  File "/home/gyc/miniconda3/envs/FastUMI/lib/python3.8/site-packages/pandas/io/parsers/readers.py", line 577, in _read
    parser = TextFileReader(filepath_or_buffer, **kwds)
  File "/home/gyc/miniconda3/envs/FastUMI/lib/python3.8/site-packages/pandas/io/parsers/readers.py", line 1407, in __init__
    self._engine = self._make_engine(f, self.engine)
  File "/home/gyc/miniconda3/envs/FastUMI/lib/python3.8/site-packages/pandas/io/parsers/readers.py", line 1679, in _make_engine
    return mapping[engine](f, **self.options)
  File "/home/gyc/miniconda3/envs/FastUMI/lib/python3.8/site-packages/pandas/io/parsers/c_parser_wrapper.py", line 93, in __init__
    self._reader = parsers.TextReader(src, **kwds)
  File "pandas/_libs/parsers.pyx", line 557, in pandas._libs.parsers.TextReader.__cinit__
pandas.errors.EmptyDataError: No columns to parse from file

but if you just run pd.read_csv('temp_video_timestamps.csv') in terminal, it has no error.

[zxzm-zak]

Thanks for the discovery! Since we have no tasks with episode_len less than 120, we did not find this problem. We will conduct modification testing immediately.