text: from decimal import Decimal
  from datetime import datetime, timedelta
  
  # Python String Format Specifiers: https://pyformat.info/
  
  a = Decimal("0.1")
  b = Decimal("0.2")
  c = a + b
  print(f"{a} + {b} = {c}")
  print(f"{a!r} + {b!r} = {c!r}")
  print()
  
  x = 0.1
  y = 0.2
  z = x + y
  print(f"{x} + {y} = {z}")
  
  print(f"{c} == {z} is {c == z}")
  print(f"{c} == {z} is {c == 0.30}")
  print(f"{c!r} == 3 * {a!r} is {c == 3*a}")
  print()
  
  d1 = datetime.now()
  d2 = d1 + timedelta(days=12)
  print(d1)
  print(d2)
  
  # https://docs.python.org/3.8/library/datetime.html#strftime-and-strptime-behavior
  print(d2.strftime("%a %Y-%m-%d %H:%M:%S"))
  