r"""An object that behaves like a number but means a field does not exist; It is always greater than any real number.
| 8 | |
| 9 | |
| 10 | class NonExistNum: |
| 11 | r"""An object that behaves like a number but means a field does not exist; It is |
| 12 | always greater than any real number. |
| 13 | """ |
| 14 | |
| 15 | def __truediv__(self, _): |
| 16 | return self |
| 17 | |
| 18 | def __add__(self, rhs): |
| 19 | return rhs |
| 20 | |
| 21 | def __radd__(self, lhs): |
| 22 | return lhs |
| 23 | |
| 24 | def __neg__(self): |
| 25 | return self |
| 26 | |
| 27 | def __gt__(self, rhs): |
| 28 | if isinstance(rhs) is NonExistNum: |
| 29 | return id(self) > id(rhs) |
| 30 | return True |
| 31 | |
| 32 | def __ge__(self, rhs): |
| 33 | return self > rhs or self == rhs |
| 34 | |
| 35 | def __lt__(self, rhs): |
| 36 | if isinstance(rhs) is NonExistNum: |
| 37 | return id(self) < id(rhs) |
| 38 | return False |
| 39 | |
| 40 | def __le__(self, rhs): |
| 41 | return self < rhs or self == rhs |
| 42 | |
| 43 | def __eq__(self, rhs): |
| 44 | return self is rhs |
| 45 | |
| 46 | def __format__(self, spec): |
| 47 | return "N/A" |
| 48 | |
| 49 | def __repr__(self): |
| 50 | return "N/A" |
| 51 | |
| 52 | |
| 53 | class OprProfRst: |