[ericfrederich]

Not well tested... just whipped this up.

The example to sort df -h by the percent:

  df -h | p 'sorted({}[1:], key=lambda x: int(x.split()[-2][:-1]))'

I saved this as ~/bin/p

  #!/usr/bin/env python3
  
  import sys
  
  single_line = sys.argv[1] == '-l'
  code = ' '.join(sys.argv[2 if single_line else 1:])
  if single_line:
      for line in sys.stdin:
          print(eval(code.format('line.strip()')))
  else:
    print('\n'.join(eval(code.format('sys.stdin.read().splitlines()'))))