Merge pull request RustPython#3697 from youknowone/drain

drain with open range

Author: coolreader18

vm/src/frame.rs

@@ -1804,7 +1804,7 @@ impl ExecutingFrame<'_> {
 
     fn pop_multiple(&mut self, count: usize) -> crate::common::boxvec::Drain<PyObjectRef> {
         let stack_len = self.state.stack.len();
-        self.state.stack.drain(stack_len - count..stack_len)
+        self.state.stack.drain(stack_len - count..)
     }
 
     fn last_value(&self) -> PyObjectRef {

vm/src/stdlib/collections.rs

@@ -391,7 +391,7 @@ mod _collections {
                     .maxlen
                     .and_then(|maxlen| deque.len().checked_sub(maxlen))
                     .unwrap_or(0);
-                deque.drain(0..skipped);
+                deque.drain(..skipped);
 
                 Ok(PyDeque {
                     deque: PyRwLock::new(deque),