Throwing errors when absolute paths are given as arguments

[gnana1997]

NotImplementedError: Non-relative patterns are unsupported

cmd> metrics -q --format=json "F:/Cohesion_Java.py"
or
cmd> metrics -q --format=json F:/Cohesion_Java.py
or
cmd> metrics -q --format=json F:\Cohesion_Java.py
or
cmd> metrics -q --format=json "F:\Cohesion_Java.py"

Traceback (most recent call last):
  File "c:\users\hp\anaconda3\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\hp\anaconda3\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\hp\Anaconda3\Scripts\metrics.exe\__main__.py", line 7, in <module>
  File "c:\users\hp\anaconda3\lib\site-packages\metrics\metrics.py", line 47, in main
    file_metrics = process_file_metrics(context, file_processors)
  File "c:\users\hp\anaconda3\lib\site-packages\metrics\metrics_utils.py", line 129, in process_file_metrics
    for in_file, key in in_files:
  File "c:\users\hp\anaconda3\lib\site-packages\metrics\metrics_utils.py", line 76, in glob_files
    matches = list(Path(root_dir).glob(pattern))
  File "c:\users\hp\anaconda3\lib\site-packages\pathlib2\__init__.py", line 1360, in glob
    raise NotImplementedError("Non-relative patterns are unsupported")
NotImplementedError: Non-relative patterns are unsupported