Return the first value from any iterable. Returns ``None`` if the iterable is empty.
(it: Iterable[_T])
| 61 | |
| 62 | |
| 63 | def _first(it: Iterable[_T]) -> _T | None: |
| 64 | """Return the first value from any iterable. |
| 65 | |
| 66 | Returns ``None`` if the iterable is empty. |
| 67 | """ |
| 68 | for val in it: |
| 69 | return val |
| 70 | return None |
| 71 | |
| 72 | |
| 73 | def _infer_value_type_with_auto_fallback( |
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