Permission denied error

[iamprayush]

Describe the bug
My python file is in a folder in Desktop and running cf-run 1426 B ./pytest.py on it gives a permission denied error.

Error log

$ cf-run 1426 B ./pytest.py 
B. Symmetric Matrix
time limit per test: 1 second
memory limit per test: 256 megabytes

Traceback (most recent call last):
  File "/home/prayush/.local/bin/cf-run", line 8, in <module>
    sys.exit(main())
  File "/home/prayush/.local/lib/python3.8/site-packages/codeforces/cf_run.py", line 64, in main
    proc = subprocess.run(
  File "/usr/lib/python3.8/subprocess.py", line 489, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.8/subprocess.py", line 1702, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: './pytest.py'

I then tried moving my python file to the home directory, but then the following error was thrown:

Error log

$ cf-run 1426 B ./pytest.py 
B. Symmetric Matrix
time limit per test: 1 second
memory limit per test: 256 megabytes

Traceback (most recent call last):
  File "/home/prayush/.local/bin/cf-run", line 8, in <module>
    sys.exit(main())
  File "/home/prayush/.local/lib/python3.8/site-packages/codeforces/cf_run.py", line 64, in main
    proc = subprocess.run(
  File "/usr/lib/python3.8/subprocess.py", line 489, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.8/subprocess.py", line 1702, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
OSError: [Errno 8] Exec format error: './pytest.py'

System (please complete the following information):

• OS: Ubuntu 20.04.1 LTS
• python-codeforces version 0.2.7
• python version 3.8