Fokko commented on code in PR #1388:
URL: https://github.com/apache/iceberg-python/pull/1388#discussion_r1944716694
##########
pyiceberg/expressions/visitors.py:
##########
@@ -1731,3 +1732,230 @@ def _can_contain_nulls(self, field_id: int) -> bool:
def _can_contain_nans(self, field_id: int) -> bool:
return (nan_count := self.nan_counts.get(field_id)) is not None and
nan_count > 0
+
+
+class ResidualVisitor(BoundBooleanExpressionVisitor[BooleanExpression], ABC):
+ """Finds the residuals for an Expression the partitions in the given
PartitionSpec.
+
+ A residual expression is made by partially evaluating an expression using
partition values.
+ For example, if a table is partitioned by day(utc_timestamp) and is read
with a filter expression
+ utc_timestamp >= a and utc_timestamp <= b, then there are 4 possible
residuals expressions
Review Comment:
```suggestion
utc_timestamp > a and utc_timestamp < b, then there are 4 possible
residuals expressions
```
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