andygrove commented on code in PR #163:
URL:
https://github.com/apache/arrow-datafusion-python/pull/163#discussion_r1096541016
##########
src/dataframe.rs:
##########
@@ -302,4 +302,10 @@ impl PyDataFrame {
wait_for_future(py, self.df.as_ref().clone().write_json(path))?;
Ok(())
}
+
+ // Executes this DataFrame to get the total number of rows.
+ fn count(&self, py: Python) -> PyResult<usize> {
+ let count = wait_for_future(py, self.df.as_ref().clone().count());
+ Ok(count.unwrap())
Review Comment:
The `unwrap` can be avoided here:
```suggestion
Ok(wait_for_future(py, self.df.as_ref().clone().count())?)
```
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