Resolved bento warnings

[linkous8]

Bento Output:

bandit try-except-pass https://bandit.readthedocs.io/en/latest/plugins/b110_try_except_pass.html
     > adjust:310                                                                     
     ╷                                                                                
  310│   except Exception as e:                                                       
     ╵                                                                                
     = Try, Except, Pass detected.

bandit subprocess-popen-with-shell-equals-true https://bandit.readthedocs.io/en/latest/plugins/b602_subprocess_popen_with_shell_equals_true.html
     > adjust:399
     ╷
  399│   res = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
  400│       shell=True, timeout=tout, executable='/bin/bash')
     ╵
     = subprocess call with shell=True identified, security issue.

bandit eval-used https://bandit.readthedocs.io/en/latest/blacklists/blacklist_calls.html#b307-eval
     > formula.py:46
     ╷
   46│   ret = eval(expr, get_gbl(), var)
     ╵
     = Use of possibly insecure function - consider using safer
       ast.literal_eval.